Home / 10,390.24-15,579.60-4,149.76

Finding the Fourth Proportional to 10,390.24, 15,579.60 and 4,149.76

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Solution

The fourth proportional to 10,390.24, 15,579.60 and 4,149.76 is: 6,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.24 : 15,579.60 = 4,149.76 : x
  2. Step 2: Convert to fraction form
    10,390.24/15,579.60 = 4,149.76/x
  3. Step 3: Cross multiply
    10,390.24x = 15,579.60 × 4,149.76
  4. Step 4: Simplify right side
    10,390.24x = 64,651,600.90
  5. Step 5: Solve for x
    x = 64,651,600.90/10,390.24
  6. Step 6: Final answer
    x = 6,222.34

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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.