Home / 14,694.28-20,280.39-8,321.20

Finding the Fourth Proportional to 14,694.28, 20,280.39 and 8,321.20

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Solution

The fourth proportional to 14,694.28, 20,280.39 and 8,321.20 is: 11,484.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.28 : 20,280.39 = 8,321.20 : x
  2. Step 2: Convert to fraction form
    14,694.28/20,280.39 = 8,321.20/x
  3. Step 3: Cross multiply
    14,694.28x = 20,280.39 × 8,321.20
  4. Step 4: Simplify right side
    14,694.28x = 168,757,079.87
  5. Step 5: Solve for x
    x = 168,757,079.87/14,694.28
  6. Step 6: Final answer
    x = 11,484.55

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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.