Home / 38,640.61-57,960.96-12,347.38

Finding the Fourth Proportional to 38,640.61, 57,960.96 and 12,347.38

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Solution

The fourth proportional to 38,640.61, 57,960.96 and 12,347.38 is: 18,521.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.61 : 57,960.96 = 12,347.38 : x
  2. Step 2: Convert to fraction form
    38,640.61/57,960.96 = 12,347.38/x
  3. Step 3: Cross multiply
    38,640.61x = 57,960.96 × 12,347.38
  4. Step 4: Simplify right side
    38,640.61x = 715,665,998.28
  5. Step 5: Solve for x
    x = 715,665,998.28/38,640.61
  6. Step 6: Final answer
    x = 18,521.08

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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.