Home / 12,079.88-18,132.10-8,331.92

Finding the Fourth Proportional to 12,079.88, 18,132.10 and 8,331.92

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Solution

The fourth proportional to 12,079.88, 18,132.10 and 8,331.92 is: 12,506.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.88 : 18,132.10 = 8,331.92 : x
  2. Step 2: Convert to fraction form
    12,079.88/18,132.10 = 8,331.92/x
  3. Step 3: Cross multiply
    12,079.88x = 18,132.10 × 8,331.92
  4. Step 4: Simplify right side
    12,079.88x = 151,075,095.14
  5. Step 5: Solve for x
    x = 151,075,095.14/12,079.88
  6. Step 6: Final answer
    x = 12,506.35

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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.