Home / 20,959.59-31,439.39-5,377.21

Finding the Fourth Proportional to 20,959.59, 31,439.39 and 5,377.21

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Solution

The fourth proportional to 20,959.59, 31,439.39 and 5,377.21 is: 8,065.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.59 : 31,439.39 = 5,377.21 : x
  2. Step 2: Convert to fraction form
    20,959.59/31,439.39 = 5,377.21/x
  3. Step 3: Cross multiply
    20,959.59x = 31,439.39 × 5,377.21
  4. Step 4: Simplify right side
    20,959.59x = 169,056,202.30
  5. Step 5: Solve for x
    x = 169,056,202.30/20,959.59
  6. Step 6: Final answer
    x = 8,065.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.