Home / 10,254.16-15,375.77-5,311.54

Finding the Fourth Proportional to 10,254.16, 15,375.77 and 5,311.54

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Solution

The fourth proportional to 10,254.16, 15,375.77 and 5,311.54 is: 7,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,254.16 : 15,375.77 = 5,311.54 : x
  2. Step 2: Convert to fraction form
    10,254.16/15,375.77 = 5,311.54/x
  3. Step 3: Cross multiply
    10,254.16x = 15,375.77 × 5,311.54
  4. Step 4: Simplify right side
    10,254.16x = 81,668,913.95
  5. Step 5: Solve for x
    x = 81,668,913.95/10,254.16
  6. Step 6: Final answer
    x = 7,964.47

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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.