Home / 21,145.01-29,177.75-11,711.21

Finding the Fourth Proportional to 21,145.01, 29,177.75 and 11,711.21

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Solution

The fourth proportional to 21,145.01, 29,177.75 and 11,711.21 is: 16,160.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.01 : 29,177.75 = 11,711.21 : x
  2. Step 2: Convert to fraction form
    21,145.01/29,177.75 = 11,711.21/x
  3. Step 3: Cross multiply
    21,145.01x = 29,177.75 × 11,711.21
  4. Step 4: Simplify right side
    21,145.01x = 341,706,640.97
  5. Step 5: Solve for x
    x = 341,706,640.97/21,145.01
  6. Step 6: Final answer
    x = 16,160.16

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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.