Home / 21,042.29-31,560.35-8,562.54

Finding the Fourth Proportional to 21,042.29, 31,560.35 and 8,562.54

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Solution

The fourth proportional to 21,042.29, 31,560.35 and 8,562.54 is: 12,842.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.29 : 31,560.35 = 8,562.54 : x
  2. Step 2: Convert to fraction form
    21,042.29/31,560.35 = 8,562.54/x
  3. Step 3: Cross multiply
    21,042.29x = 31,560.35 × 8,562.54
  4. Step 4: Simplify right side
    21,042.29x = 270,236,716.48
  5. Step 5: Solve for x
    x = 270,236,716.48/21,042.29
  6. Step 6: Final answer
    x = 12,842.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.