Home / 38,790.61-58,077.50-20,957.38

Finding the Fourth Proportional to 38,790.61, 58,077.50 and 20,957.38

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Solution

The fourth proportional to 38,790.61, 58,077.50 and 20,957.38 is: 31,377.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,790.61 : 58,077.50 = 20,957.38 : x
  2. Step 2: Convert to fraction form
    38,790.61/58,077.50 = 20,957.38/x
  3. Step 3: Cross multiply
    38,790.61x = 58,077.50 × 20,957.38
  4. Step 4: Simplify right side
    38,790.61x = 1,217,151,986.97
  5. Step 5: Solve for x
    x = 1,217,151,986.97/38,790.61
  6. Step 6: Final answer
    x = 31,377.49

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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.