Home / 12,400.60-18,600.90-8,246.20

Finding the Fourth Proportional to 12,400.60, 18,600.90 and 8,246.20

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Solution

The fourth proportional to 12,400.60, 18,600.90 and 8,246.20 is: 12,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.60 : 18,600.90 = 8,246.20 : x
  2. Step 2: Convert to fraction form
    12,400.60/18,600.90 = 8,246.20/x
  3. Step 3: Cross multiply
    12,400.60x = 18,600.90 × 8,246.20
  4. Step 4: Simplify right side
    12,400.60x = 153,386,741.58
  5. Step 5: Solve for x
    x = 153,386,741.58/12,400.60
  6. Step 6: Final answer
    x = 12,369.30

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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.