Home / 39,279.31-54,204.55-21,374.36

Finding the Fourth Proportional to 39,279.31, 54,204.55 and 21,374.36

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Solution

The fourth proportional to 39,279.31, 54,204.55 and 21,374.36 is: 29,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.31 : 54,204.55 = 21,374.36 : x
  2. Step 2: Convert to fraction form
    39,279.31/54,204.55 = 21,374.36/x
  3. Step 3: Cross multiply
    39,279.31x = 54,204.55 × 21,374.36
  4. Step 4: Simplify right side
    39,279.31x = 1,158,587,565.34
  5. Step 5: Solve for x
    x = 1,158,587,565.34/39,279.31
  6. Step 6: Final answer
    x = 29,496.13

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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.