Home / 39,187.20-54,078.17-21,282.06

Finding the Fourth Proportional to 39,187.20, 54,078.17 and 21,282.06

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Solution

The fourth proportional to 39,187.20, 54,078.17 and 21,282.06 is: 29,369.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,187.20 : 54,078.17 = 21,282.06 : x
  2. Step 2: Convert to fraction form
    39,187.20/54,078.17 = 21,282.06/x
  3. Step 3: Cross multiply
    39,187.20x = 54,078.17 × 21,282.06
  4. Step 4: Simplify right side
    39,187.20x = 1,150,894,752.22
  5. Step 5: Solve for x
    x = 1,150,894,752.22/39,187.20
  6. Step 6: Final answer
    x = 29,369.15

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1.5x scale

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.