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Finding the Fourth Proportional to 10,990.68, 15,165 and 6,273.24

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Solution

The fourth proportional to 10,990.68, 15,165 and 6,273.24 is: 8,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.68 : 15,165 = 6,273.24 : x
  2. Step 2: Convert to fraction form
    10,990.68/15,165 = 6,273.24/x
  3. Step 3: Cross multiply
    10,990.68x = 15,165 × 6,273.24
  4. Step 4: Simplify right side
    10,990.68x = 95,133,684.60
  5. Step 5: Solve for x
    x = 95,133,684.60/10,990.68
  6. Step 6: Final answer
    x = 8,655.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.