Home / 12,508.40-18,765.76-4,717.28

Finding the Fourth Proportional to 12,508.40, 18,765.76 and 4,717.28

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Solution

The fourth proportional to 12,508.40, 18,765.76 and 4,717.28 is: 7,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.40 : 18,765.76 = 4,717.28 : x
  2. Step 2: Convert to fraction form
    12,508.40/18,765.76 = 4,717.28/x
  3. Step 3: Cross multiply
    12,508.40x = 18,765.76 × 4,717.28
  4. Step 4: Simplify right side
    12,508.40x = 88,523,344.33
  5. Step 5: Solve for x
    x = 88,523,344.33/12,508.40
  6. Step 6: Final answer
    x = 7,077.11

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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.