Home / 31,470.06-43,432.83-18,895.62

Finding the Fourth Proportional to 31,470.06, 43,432.83 and 18,895.62

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Solution

The fourth proportional to 31,470.06, 43,432.83 and 18,895.62 is: 26,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.06 : 43,432.83 = 18,895.62 : x
  2. Step 2: Convert to fraction form
    31,470.06/43,432.83 = 18,895.62/x
  3. Step 3: Cross multiply
    31,470.06x = 43,432.83 × 18,895.62
  4. Step 4: Simplify right side
    31,470.06x = 820,690,251.20
  5. Step 5: Solve for x
    x = 820,690,251.20/31,470.06
  6. Step 6: Final answer
    x = 26,078.45

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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.