Home / 12,074.10-18,111.15-9,158.10

Finding the Fourth Proportional to 12,074.10, 18,111.15 and 9,158.10

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Solution

The fourth proportional to 12,074.10, 18,111.15 and 9,158.10 is: 13,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074.10 : 18,111.15 = 9,158.10 : x
  2. Step 2: Convert to fraction form
    12,074.10/18,111.15 = 9,158.10/x
  3. Step 3: Cross multiply
    12,074.10x = 18,111.15 × 9,158.10
  4. Step 4: Simplify right side
    12,074.10x = 165,863,722.82
  5. Step 5: Solve for x
    x = 165,863,722.82/12,074.10
  6. Step 6: Final answer
    x = 13,737.15

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Half scale
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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.