Home / 11,311.10-15,612.18-7,280.66

Finding the Fourth Proportional to 11,311.10, 15,612.18 and 7,280.66

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Solution

The fourth proportional to 11,311.10, 15,612.18 and 7,280.66 is: 10,049.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.10 : 15,612.18 = 7,280.66 : x
  2. Step 2: Convert to fraction form
    11,311.10/15,612.18 = 7,280.66/x
  3. Step 3: Cross multiply
    11,311.10x = 15,612.18 × 7,280.66
  4. Step 4: Simplify right side
    11,311.10x = 113,666,974.44
  5. Step 5: Solve for x
    x = 113,666,974.44/11,311.10
  6. Step 6: Final answer
    x = 10,049.15

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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.