Home / 31,861.62-43,972.47-18,432.63

Finding the Fourth Proportional to 31,861.62, 43,972.47 and 18,432.63

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Solution

The fourth proportional to 31,861.62, 43,972.47 and 18,432.63 is: 25,439.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,861.62 : 43,972.47 = 18,432.63 : x
  2. Step 2: Convert to fraction form
    31,861.62/43,972.47 = 18,432.63/x
  3. Step 3: Cross multiply
    31,861.62x = 43,972.47 × 18,432.63
  4. Step 4: Simplify right side
    31,861.62x = 810,528,269.70
  5. Step 5: Solve for x
    x = 810,528,269.70/31,861.62
  6. Step 6: Final answer
    x = 25,439.02

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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.