Home / 31,724.72-43,781.28-19,147.04

Finding the Fourth Proportional to 31,724.72, 43,781.28 and 19,147.04

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Solution

The fourth proportional to 31,724.72, 43,781.28 and 19,147.04 is: 26,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,724.72 : 43,781.28 = 19,147.04 : x
  2. Step 2: Convert to fraction form
    31,724.72/43,781.28 = 19,147.04/x
  3. Step 3: Cross multiply
    31,724.72x = 43,781.28 × 19,147.04
  4. Step 4: Simplify right side
    31,724.72x = 838,281,919.41
  5. Step 5: Solve for x
    x = 838,281,919.41/31,724.72
  6. Step 6: Final answer
    x = 26,423.62

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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.