Home / 11,819.61-17,728.20-5,578.02

Finding the Fourth Proportional to 11,819.61, 17,728.20 and 5,578.02

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Solution

The fourth proportional to 11,819.61, 17,728.20 and 5,578.02 is: 8,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.61 : 17,728.20 = 5,578.02 : x
  2. Step 2: Convert to fraction form
    11,819.61/17,728.20 = 5,578.02/x
  3. Step 3: Cross multiply
    11,819.61x = 17,728.20 × 5,578.02
  4. Step 4: Simplify right side
    11,819.61x = 98,888,254.16
  5. Step 5: Solve for x
    x = 98,888,254.16/11,819.61
  6. Step 6: Final answer
    x = 8,366.46

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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.