Home / 31,806.87-43,901.46-18,385.92

Finding the Fourth Proportional to 31,806.87, 43,901.46 and 18,385.92

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Solution

The fourth proportional to 31,806.87, 43,901.46 and 18,385.92 is: 25,377.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.87 : 43,901.46 = 18,385.92 : x
  2. Step 2: Convert to fraction form
    31,806.87/43,901.46 = 18,385.92/x
  3. Step 3: Cross multiply
    31,806.87x = 43,901.46 × 18,385.92
  4. Step 4: Simplify right side
    31,806.87x = 807,168,731.44
  5. Step 5: Solve for x
    x = 807,168,731.44/31,806.87
  6. Step 6: Final answer
    x = 25,377.18

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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.