Home / 39,363.19-54,321.13-21,458.19

Finding the Fourth Proportional to 39,363.19, 54,321.13 and 21,458.19

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Solution

The fourth proportional to 39,363.19, 54,321.13 and 21,458.19 is: 29,612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.19 : 54,321.13 = 21,458.19 : x
  2. Step 2: Convert to fraction form
    39,363.19/54,321.13 = 21,458.19/x
  3. Step 3: Cross multiply
    39,363.19x = 54,321.13 × 21,458.19
  4. Step 4: Simplify right side
    39,363.19x = 1,165,633,206.30
  5. Step 5: Solve for x
    x = 1,165,633,206.30/39,363.19
  6. Step 6: Final answer
    x = 29,612.26

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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.