Home / 20,862.72-31,294.08-8,383.68

Finding the Fourth Proportional to 20,862.72, 31,294.08 and 8,383.68

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Solution

The fourth proportional to 20,862.72, 31,294.08 and 8,383.68 is: 12,575.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.72 : 31,294.08 = 8,383.68 : x
  2. Step 2: Convert to fraction form
    20,862.72/31,294.08 = 8,383.68/x
  3. Step 3: Cross multiply
    20,862.72x = 31,294.08 × 8,383.68
  4. Step 4: Simplify right side
    20,862.72x = 262,359,552.61
  5. Step 5: Solve for x
    x = 262,359,552.61/20,862.72
  6. Step 6: Final answer
    x = 12,575.52

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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.