Home / 22,720.30-31,353.40-12,648.74

Finding the Fourth Proportional to 22,720.30, 31,353.40 and 12,648.74

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Solution

The fourth proportional to 22,720.30, 31,353.40 and 12,648.74 is: 17,454.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.30 : 31,353.40 = 12,648.74 : x
  2. Step 2: Convert to fraction form
    22,720.30/31,353.40 = 12,648.74/x
  3. Step 3: Cross multiply
    22,720.30x = 31,353.40 × 12,648.74
  4. Step 4: Simplify right side
    22,720.30x = 396,581,130.53
  5. Step 5: Solve for x
    x = 396,581,130.53/22,720.30
  6. Step 6: Final answer
    x = 17,454.92

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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.