Home / 12,081.53-18,126.92-4,691.18

Finding the Fourth Proportional to 12,081.53, 18,126.92 and 4,691.18

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Solution

The fourth proportional to 12,081.53, 18,126.92 and 4,691.18 is: 7,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.53 : 18,126.92 = 4,691.18 : x
  2. Step 2: Convert to fraction form
    12,081.53/18,126.92 = 4,691.18/x
  3. Step 3: Cross multiply
    12,081.53x = 18,126.92 × 4,691.18
  4. Step 4: Simplify right side
    12,081.53x = 85,036,666.43
  5. Step 5: Solve for x
    x = 85,036,666.43/12,081.53
  6. Step 6: Final answer
    x = 7,038.57

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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.