Home / 21,088.28-29,101.98-11,657.12

Finding the Fourth Proportional to 21,088.28, 29,101.98 and 11,657.12

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Solution

The fourth proportional to 21,088.28, 29,101.98 and 11,657.12 is: 16,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.28 : 29,101.98 = 11,657.12 : x
  2. Step 2: Convert to fraction form
    21,088.28/29,101.98 = 11,657.12/x
  3. Step 3: Cross multiply
    21,088.28x = 29,101.98 × 11,657.12
  4. Step 4: Simplify right side
    21,088.28x = 339,245,273.10
  5. Step 5: Solve for x
    x = 339,245,273.10/21,088.28
  6. Step 6: Final answer
    x = 16,086.91

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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.