Home / 38,949.52-58,431.54-12,647.20

Finding the Fourth Proportional to 38,949.52, 58,431.54 and 12,647.20

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Solution

The fourth proportional to 38,949.52, 58,431.54 and 12,647.20 is: 18,973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,949.52 : 58,431.54 = 12,647.20 : x
  2. Step 2: Convert to fraction form
    38,949.52/58,431.54 = 12,647.20/x
  3. Step 3: Cross multiply
    38,949.52x = 58,431.54 × 12,647.20
  4. Step 4: Simplify right side
    38,949.52x = 738,995,372.69
  5. Step 5: Solve for x
    x = 738,995,372.69/38,949.52
  6. Step 6: Final answer
    x = 18,973.16

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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.