Home / 39,384.11-54,350.53-21,478.95

Finding the Fourth Proportional to 39,384.11, 54,350.53 and 21,478.95

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Solution

The fourth proportional to 39,384.11, 54,350.53 and 21,478.95 is: 29,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.11 : 54,350.53 = 21,478.95 : x
  2. Step 2: Convert to fraction form
    39,384.11/54,350.53 = 21,478.95/x
  3. Step 3: Cross multiply
    39,384.11x = 54,350.53 × 21,478.95
  4. Step 4: Simplify right side
    39,384.11x = 1,167,392,262.65
  5. Step 5: Solve for x
    x = 1,167,392,262.65/39,384.11
  6. Step 6: Final answer
    x = 29,641.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.