Home / 38,425.28-53,026.79-21,429.54

Finding the Fourth Proportional to 38,425.28, 53,026.79 and 21,429.54

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Solution

The fourth proportional to 38,425.28, 53,026.79 and 21,429.54 is: 29,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,425.28 : 53,026.79 = 21,429.54 : x
  2. Step 2: Convert to fraction form
    38,425.28/53,026.79 = 21,429.54/x
  3. Step 3: Cross multiply
    38,425.28x = 53,026.79 × 21,429.54
  4. Step 4: Simplify right side
    38,425.28x = 1,136,339,717.38
  5. Step 5: Solve for x
    x = 1,136,339,717.38/38,425.28
  6. Step 6: Final answer
    x = 29,572.71

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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.