Home / 13,330.08-18,389.70-8,021.88

Finding the Fourth Proportional to 13,330.08, 18,389.70 and 8,021.88

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Solution

The fourth proportional to 13,330.08, 18,389.70 and 8,021.88 is: 11,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.08 : 18,389.70 = 8,021.88 : x
  2. Step 2: Convert to fraction form
    13,330.08/18,389.70 = 8,021.88/x
  3. Step 3: Cross multiply
    13,330.08x = 18,389.70 × 8,021.88
  4. Step 4: Simplify right side
    13,330.08x = 147,519,966.64
  5. Step 5: Solve for x
    x = 147,519,966.64/13,330.08
  6. Step 6: Final answer
    x = 11,066.70

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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.