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Finding the Fourth Proportional to 21,752.62, 30,010.62 and 13,251.22

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Solution

The fourth proportional to 21,752.62, 30,010.62 and 13,251.22 is: 18,281.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.62 : 30,010.62 = 13,251.22 : x
  2. Step 2: Convert to fraction form
    21,752.62/30,010.62 = 13,251.22/x
  3. Step 3: Cross multiply
    21,752.62x = 30,010.62 × 13,251.22
  4. Step 4: Simplify right side
    21,752.62x = 397,677,327.96
  5. Step 5: Solve for x
    x = 397,677,327.96/21,752.62
  6. Step 6: Final answer
    x = 18,281.81

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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.