Home / 12,458.28-17,183.40-8,472.30

Finding the Fourth Proportional to 12,458.28, 17,183.40 and 8,472.30

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Solution

The fourth proportional to 12,458.28, 17,183.40 and 8,472.30 is: 11,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.28 : 17,183.40 = 8,472.30 : x
  2. Step 2: Convert to fraction form
    12,458.28/17,183.40 = 8,472.30/x
  3. Step 3: Cross multiply
    12,458.28x = 17,183.40 × 8,472.30
  4. Step 4: Simplify right side
    12,458.28x = 145,582,919.82
  5. Step 5: Solve for x
    x = 145,582,919.82/12,458.28
  6. Step 6: Final answer
    x = 11,685.64

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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.