Home / 21,142.59-29,177.74-11,711.16

Finding the Fourth Proportional to 21,142.59, 29,177.74 and 11,711.16

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Solution

The fourth proportional to 21,142.59, 29,177.74 and 11,711.16 is: 16,161.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.59 : 29,177.74 = 11,711.16 : x
  2. Step 2: Convert to fraction form
    21,142.59/29,177.74 = 11,711.16/x
  3. Step 3: Cross multiply
    21,142.59x = 29,177.74 × 11,711.16
  4. Step 4: Simplify right side
    21,142.59x = 341,705,086.80
  5. Step 5: Solve for x
    x = 341,705,086.80/21,142.59
  6. Step 6: Final answer
    x = 16,161.93

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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.