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Finding the Fourth Proportional to 30,279.35, 45,400.80 and 15,517.10

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Solution

The fourth proportional to 30,279.35, 45,400.80 and 15,517.10 is: 23,266.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.35 : 45,400.80 = 15,517.10 : x
  2. Step 2: Convert to fraction form
    30,279.35/45,400.80 = 15,517.10/x
  3. Step 3: Cross multiply
    30,279.35x = 45,400.80 × 15,517.10
  4. Step 4: Simplify right side
    30,279.35x = 704,488,753.68
  5. Step 5: Solve for x
    x = 704,488,753.68/30,279.35
  6. Step 6: Final answer
    x = 23,266.31

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1.5x scale

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.