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Finding the Fourth Proportional to 38,160.80, 57,240.30 and 10,458.80

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Solution

The fourth proportional to 38,160.80, 57,240.30 and 10,458.80 is: 15,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,160.80 : 57,240.30 = 10,458.80 : x
  2. Step 2: Convert to fraction form
    38,160.80/57,240.30 = 10,458.80/x
  3. Step 3: Cross multiply
    38,160.80x = 57,240.30 × 10,458.80
  4. Step 4: Simplify right side
    38,160.80x = 598,664,849.64
  5. Step 5: Solve for x
    x = 598,664,849.64/38,160.80
  6. Step 6: Final answer
    x = 15,687.95

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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.