Home / 38,930-58,402.26-12,631.32

Finding the Fourth Proportional to 38,930, 58,402.26 and 12,631.32

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Solution

The fourth proportional to 38,930, 58,402.26 and 12,631.32 is: 18,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930 : 58,402.26 = 12,631.32 : x
  2. Step 2: Convert to fraction form
    38,930/58,402.26 = 12,631.32/x
  3. Step 3: Cross multiply
    38,930x = 58,402.26 × 12,631.32
  4. Step 4: Simplify right side
    38,930x = 737,697,634.78
  5. Step 5: Solve for x
    x = 737,697,634.78/38,930
  6. Step 6: Final answer
    x = 18,949.34

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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.