Home / 31,694.28-47,541.60-8,320.20

Finding the Fourth Proportional to 31,694.28, 47,541.60 and 8,320.20

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Solution

The fourth proportional to 31,694.28, 47,541.60 and 8,320.20 is: 12,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,694.28 : 47,541.60 = 8,320.20 : x
  2. Step 2: Convert to fraction form
    31,694.28/47,541.60 = 8,320.20/x
  3. Step 3: Cross multiply
    31,694.28x = 47,541.60 × 8,320.20
  4. Step 4: Simplify right side
    31,694.28x = 395,555,620.32
  5. Step 5: Solve for x
    x = 395,555,620.32/31,694.28
  6. Step 6: Final answer
    x = 12,480.35

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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.