Home / 20,838.73-31,275.77-8,367.19

Finding the Fourth Proportional to 20,838.73, 31,275.77 and 8,367.19

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Solution

The fourth proportional to 20,838.73, 31,275.77 and 8,367.19 is: 12,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.73 : 31,275.77 = 8,367.19 : x
  2. Step 2: Convert to fraction form
    20,838.73/31,275.77 = 8,367.19/x
  3. Step 3: Cross multiply
    20,838.73x = 31,275.77 × 8,367.19
  4. Step 4: Simplify right side
    20,838.73x = 261,690,153.61
  5. Step 5: Solve for x
    x = 261,690,153.61/20,838.73
  6. Step 6: Final answer
    x = 12,557.88

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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.