Home / 21,144.28-29,176.98-11,711.08

Finding the Fourth Proportional to 21,144.28, 29,176.98 and 11,711.08

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Solution

The fourth proportional to 21,144.28, 29,176.98 and 11,711.08 is: 16,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.28 : 29,176.98 = 11,711.08 : x
  2. Step 2: Convert to fraction form
    21,144.28/29,176.98 = 11,711.08/x
  3. Step 3: Cross multiply
    21,144.28x = 29,176.98 × 11,711.08
  4. Step 4: Simplify right side
    21,144.28x = 341,693,946.94
  5. Step 5: Solve for x
    x = 341,693,946.94/21,144.28
  6. Step 6: Final answer
    x = 16,160.11

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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.