Home / 38,689.92-57,934.08-21,123.72

Finding the Fourth Proportional to 38,689.92, 57,934.08 and 21,123.72

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Solution

The fourth proportional to 38,689.92, 57,934.08 and 21,123.72 is: 31,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.92 : 57,934.08 = 21,123.72 : x
  2. Step 2: Convert to fraction form
    38,689.92/57,934.08 = 21,123.72/x
  3. Step 3: Cross multiply
    38,689.92x = 57,934.08 × 21,123.72
  4. Step 4: Simplify right side
    38,689.92x = 1,223,783,284.38
  5. Step 5: Solve for x
    x = 1,223,783,284.38/38,689.92
  6. Step 6: Final answer
    x = 31,630.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.