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Finding the Fourth Proportional to 21,577.92, 29,760.48 and 14,124.48

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Solution

The fourth proportional to 21,577.92, 29,760.48 and 14,124.48 is: 19,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,577.92 : 29,760.48 = 14,124.48 : x
  2. Step 2: Convert to fraction form
    21,577.92/29,760.48 = 14,124.48/x
  3. Step 3: Cross multiply
    21,577.92x = 29,760.48 × 14,124.48
  4. Step 4: Simplify right side
    21,577.92x = 420,351,304.55
  5. Step 5: Solve for x
    x = 420,351,304.55/21,577.92
  6. Step 6: Final answer
    x = 19,480.62

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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.