Home / 21,136.29-29,146.77-15,471.96

Finding the Fourth Proportional to 21,136.29, 29,146.77 and 15,471.96

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Solution

The fourth proportional to 21,136.29, 29,146.77 and 15,471.96 is: 21,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.29 : 29,146.77 = 15,471.96 : x
  2. Step 2: Convert to fraction form
    21,136.29/29,146.77 = 15,471.96/x
  3. Step 3: Cross multiply
    21,136.29x = 29,146.77 × 15,471.96
  4. Step 4: Simplify right side
    21,136.29x = 450,957,659.57
  5. Step 5: Solve for x
    x = 450,957,659.57/21,136.29
  6. Step 6: Final answer
    x = 21,335.71

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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.