Home / 38,918.48-58,385.92-12,621.18

Finding the Fourth Proportional to 38,918.48, 58,385.92 and 12,621.18

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Solution

The fourth proportional to 38,918.48, 58,385.92 and 12,621.18 is: 18,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,918.48 : 58,385.92 = 12,621.18 : x
  2. Step 2: Convert to fraction form
    38,918.48/58,385.92 = 12,621.18/x
  3. Step 3: Cross multiply
    38,918.48x = 58,385.92 × 12,621.18
  4. Step 4: Simplify right side
    38,918.48x = 736,899,205.79
  5. Step 5: Solve for x
    x = 736,899,205.79/38,918.48
  6. Step 6: Final answer
    x = 18,934.43

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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.