Home / 12,084.57-18,120.70-4,691.15

Finding the Fourth Proportional to 12,084.57, 18,120.70 and 4,691.15

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Solution

The fourth proportional to 12,084.57, 18,120.70 and 4,691.15 is: 7,034.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.57 : 18,120.70 = 4,691.15 : x
  2. Step 2: Convert to fraction form
    12,084.57/18,120.70 = 4,691.15/x
  3. Step 3: Cross multiply
    12,084.57x = 18,120.70 × 4,691.15
  4. Step 4: Simplify right side
    12,084.57x = 85,006,921.81
  5. Step 5: Solve for x
    x = 85,006,921.81/12,084.57
  6. Step 6: Final answer
    x = 7,034.34

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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.