Home / 11,819.16-17,729.28-4,421.70

Finding the Fourth Proportional to 11,819.16, 17,729.28 and 4,421.70

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Solution

The fourth proportional to 11,819.16, 17,729.28 and 4,421.70 is: 6,632.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.16 : 17,729.28 = 4,421.70 : x
  2. Step 2: Convert to fraction form
    11,819.16/17,729.28 = 4,421.70/x
  3. Step 3: Cross multiply
    11,819.16x = 17,729.28 × 4,421.70
  4. Step 4: Simplify right side
    11,819.16x = 78,393,557.38
  5. Step 5: Solve for x
    x = 78,393,557.38/11,819.16
  6. Step 6: Final answer
    x = 6,632.75

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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.