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Finding the Fourth Proportional to 22,512, 31,066.56 and 12,577.92

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Solution

The fourth proportional to 22,512, 31,066.56 and 12,577.92 is: 17,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,512 : 31,066.56 = 12,577.92 : x
  2. Step 2: Convert to fraction form
    22,512/31,066.56 = 12,577.92/x
  3. Step 3: Cross multiply
    22,512x = 31,066.56 × 12,577.92
  4. Step 4: Simplify right side
    22,512x = 390,752,706.36
  5. Step 5: Solve for x
    x = 390,752,706.36/22,512
  6. Step 6: Final answer
    x = 17,357.53

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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.