Home / 21,025.22-31,542.16-8,545.22

Finding the Fourth Proportional to 21,025.22, 31,542.16 and 8,545.22

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Solution

The fourth proportional to 21,025.22, 31,542.16 and 8,545.22 is: 12,819.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.22 : 31,542.16 = 8,545.22 : x
  2. Step 2: Convert to fraction form
    21,025.22/31,542.16 = 8,545.22/x
  3. Step 3: Cross multiply
    21,025.22x = 31,542.16 × 8,545.22
  4. Step 4: Simplify right side
    21,025.22x = 269,534,740.42
  5. Step 5: Solve for x
    x = 269,534,740.42/21,025.22
  6. Step 6: Final answer
    x = 12,819.59

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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.