Home / 13,428,760.70-20,143,141.05-11,602,178.30

Finding the Fourth Proportional to 13,428,760.70, 20,143,141.05 and 11,602,178.30

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Solution

The fourth proportional to 13,428,760.70, 20,143,141.05 and 11,602,178.30 is: 17,403,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,760.70 : 20,143,141.05 = 11,602,178.30 : x
  2. Step 2: Convert to fraction form
    13,428,760.70/20,143,141.05 = 11,602,178.30/x
  3. Step 3: Cross multiply
    13,428,760.70x = 20,143,141.05 × 11,602,178.30
  4. Step 4: Simplify right side
    13,428,760.70x = 233,704,313,984,149.25
  5. Step 5: Solve for x
    x = 233,704,313,984,149.25/13,428,760.70
  6. Step 6: Final answer
    x = 17,403,267.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.