Home / 21,086.28-29,099.22-11,655.12

Finding the Fourth Proportional to 21,086.28, 29,099.22 and 11,655.12

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Solution

The fourth proportional to 21,086.28, 29,099.22 and 11,655.12 is: 16,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.28 : 29,099.22 = 11,655.12 : x
  2. Step 2: Convert to fraction form
    21,086.28/29,099.22 = 11,655.12/x
  3. Step 3: Cross multiply
    21,086.28x = 29,099.22 × 11,655.12
  4. Step 4: Simplify right side
    21,086.28x = 339,154,901.01
  5. Step 5: Solve for x
    x = 339,154,901.01/21,086.28
  6. Step 6: Final answer
    x = 16,084.15

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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.