Home / 12,498.40-18,747.60-7,832.80

Finding the Fourth Proportional to 12,498.40, 18,747.60 and 7,832.80

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Solution

The fourth proportional to 12,498.40, 18,747.60 and 7,832.80 is: 11,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.40 : 18,747.60 = 7,832.80 : x
  2. Step 2: Convert to fraction form
    12,498.40/18,747.60 = 7,832.80/x
  3. Step 3: Cross multiply
    12,498.40x = 18,747.60 × 7,832.80
  4. Step 4: Simplify right side
    12,498.40x = 146,846,201.28
  5. Step 5: Solve for x
    x = 146,846,201.28/12,498.40
  6. Step 6: Final answer
    x = 11,749.20

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Similar ratio
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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.