Home / 13,658,158,141.30-18,842,486,704.81-9,143,491,748.36

Finding the Fourth Proportional to 13,658,158,141.30, 18,842,486,704.81 and 9,143,491,748.36

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Solution

The fourth proportional to 13,658,158,141.30, 18,842,486,704.81 and 9,143,491,748.36 is: 12,614,154,845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658,158,141.30 : 18,842,486,704.81 = 9,143,491,748.36 : x
  2. Step 2: Convert to fraction form
    13,658,158,141.30/18,842,486,704.81 = 9,143,491,748.36/x
  3. Step 3: Cross multiply
    13,658,158,141.30x = 18,842,486,704.81 × 9,143,491,748.36
  4. Step 4: Simplify right side
    13,658,158,141.30x = 172,286,121,704,013,266,944
  5. Step 5: Solve for x
    x = 172,286,121,704,013,266,944/13,658,158,141.30
  6. Step 6: Final answer
    x = 12,614,154,845.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.