Home / 12,540.67-18,812.56-4,104.28

Finding the Fourth Proportional to 12,540.67, 18,812.56 and 4,104.28

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Solution

The fourth proportional to 12,540.67, 18,812.56 and 4,104.28 is: 6,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.67 : 18,812.56 = 4,104.28 : x
  2. Step 2: Convert to fraction form
    12,540.67/18,812.56 = 4,104.28/x
  3. Step 3: Cross multiply
    12,540.67x = 18,812.56 × 4,104.28
  4. Step 4: Simplify right side
    12,540.67x = 77,211,899.17
  5. Step 5: Solve for x
    x = 77,211,899.17/12,540.67
  6. Step 6: Final answer
    x = 6,156.92

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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.