Home / 12,132,342.30-18,198,513.45-9,421,993.20

Finding the Fourth Proportional to 12,132,342.30, 18,198,513.45 and 9,421,993.20

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Solution

The fourth proportional to 12,132,342.30, 18,198,513.45 and 9,421,993.20 is: 14,132,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132,342.30 : 18,198,513.45 = 9,421,993.20 : x
  2. Step 2: Convert to fraction form
    12,132,342.30/18,198,513.45 = 9,421,993.20/x
  3. Step 3: Cross multiply
    12,132,342.30x = 18,198,513.45 × 9,421,993.20
  4. Step 4: Simplify right side
    12,132,342.30x = 171,466,269,976,008.53
  5. Step 5: Solve for x
    x = 171,466,269,976,008.53/12,132,342.30
  6. Step 6: Final answer
    x = 14,132,989.80

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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.