Home / 12,438.30-18,657.45-12,073.80

Finding the Fourth Proportional to 12,438.30, 18,657.45 and 12,073.80

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Solution

The fourth proportional to 12,438.30, 18,657.45 and 12,073.80 is: 18,110.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.30 : 18,657.45 = 12,073.80 : x
  2. Step 2: Convert to fraction form
    12,438.30/18,657.45 = 12,073.80/x
  3. Step 3: Cross multiply
    12,438.30x = 18,657.45 × 12,073.80
  4. Step 4: Simplify right side
    12,438.30x = 225,266,319.81
  5. Step 5: Solve for x
    x = 225,266,319.81/12,438.30
  6. Step 6: Final answer
    x = 18,110.70

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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.