Home / 10,207.55-15,315.68-5,280.66

Finding the Fourth Proportional to 10,207.55, 15,315.68 and 5,280.66

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Solution

The fourth proportional to 10,207.55, 15,315.68 and 5,280.66 is: 7,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.55 : 15,315.68 = 5,280.66 : x
  2. Step 2: Convert to fraction form
    10,207.55/15,315.68 = 5,280.66/x
  3. Step 3: Cross multiply
    10,207.55x = 15,315.68 × 5,280.66
  4. Step 4: Simplify right side
    10,207.55x = 80,876,911.95
  5. Step 5: Solve for x
    x = 80,876,911.95/10,207.55
  6. Step 6: Final answer
    x = 7,923.24

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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.