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Finding the Fourth Proportional to 22,578.62, 31,159.65 and 12,508.16

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Solution

The fourth proportional to 22,578.62, 31,159.65 and 12,508.16 is: 17,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,578.62 : 31,159.65 = 12,508.16 : x
  2. Step 2: Convert to fraction form
    22,578.62/31,159.65 = 12,508.16/x
  3. Step 3: Cross multiply
    22,578.62x = 31,159.65 × 12,508.16
  4. Step 4: Simplify right side
    22,578.62x = 389,749,778.85
  5. Step 5: Solve for x
    x = 389,749,778.85/22,578.62
  6. Step 6: Final answer
    x = 17,261.90

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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.