Home / 12,541.53-18,805.60-4,218.78

Finding the Fourth Proportional to 12,541.53, 18,805.60 and 4,218.78

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Solution

The fourth proportional to 12,541.53, 18,805.60 and 4,218.78 is: 6,325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,541.53 : 18,805.60 = 4,218.78 : x
  2. Step 2: Convert to fraction form
    12,541.53/18,805.60 = 4,218.78/x
  3. Step 3: Cross multiply
    12,541.53x = 18,805.60 × 4,218.78
  4. Step 4: Simplify right side
    12,541.53x = 79,336,689.17
  5. Step 5: Solve for x
    x = 79,336,689.17/12,541.53
  6. Step 6: Final answer
    x = 6,325.92

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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.