Home / 20,382.72-30,574.16-5,591.80

Finding the Fourth Proportional to 20,382.72, 30,574.16 and 5,591.80

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Solution

The fourth proportional to 20,382.72, 30,574.16 and 5,591.80 is: 8,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.72 : 30,574.16 = 5,591.80 : x
  2. Step 2: Convert to fraction form
    20,382.72/30,574.16 = 5,591.80/x
  3. Step 3: Cross multiply
    20,382.72x = 30,574.16 × 5,591.80
  4. Step 4: Simplify right side
    20,382.72x = 170,964,587.89
  5. Step 5: Solve for x
    x = 170,964,587.89/20,382.72
  6. Step 6: Final answer
    x = 8,387.72

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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.