Home / 31,437.20-43,401.27-20,841.18

Finding the Fourth Proportional to 31,437.20, 43,401.27 and 20,841.18

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Solution

The fourth proportional to 31,437.20, 43,401.27 and 20,841.18 is: 28,772.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.20 : 43,401.27 = 20,841.18 : x
  2. Step 2: Convert to fraction form
    31,437.20/43,401.27 = 20,841.18/x
  3. Step 3: Cross multiply
    31,437.20x = 43,401.27 × 20,841.18
  4. Step 4: Simplify right side
    31,437.20x = 904,533,680.30
  5. Step 5: Solve for x
    x = 904,533,680.30/31,437.20
  6. Step 6: Final answer
    x = 28,772.72

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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.