Home / 38,120.28-52,601.01-21,123.71

Finding the Fourth Proportional to 38,120.28, 52,601.01 and 21,123.71

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Solution

The fourth proportional to 38,120.28, 52,601.01 and 21,123.71 is: 29,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120.28 : 52,601.01 = 21,123.71 : x
  2. Step 2: Convert to fraction form
    38,120.28/52,601.01 = 21,123.71/x
  3. Step 3: Cross multiply
    38,120.28x = 52,601.01 × 21,123.71
  4. Step 4: Simplify right side
    38,120.28x = 1,111,128,217.94
  5. Step 5: Solve for x
    x = 1,111,128,217.94/38,120.28
  6. Step 6: Final answer
    x = 29,147.96

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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.