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Finding the Fourth Proportional to 21,552.76, 29,735.88 and 13,052.17

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Solution

The fourth proportional to 21,552.76, 29,735.88 and 13,052.17 is: 18,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,552.76 : 29,735.88 = 13,052.17 : x
  2. Step 2: Convert to fraction form
    21,552.76/29,735.88 = 13,052.17/x
  3. Step 3: Cross multiply
    21,552.76x = 29,735.88 × 13,052.17
  4. Step 4: Simplify right side
    21,552.76x = 388,117,760.86
  5. Step 5: Solve for x
    x = 388,117,760.86/21,552.76
  6. Step 6: Final answer
    x = 18,007.80

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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.