Home / 11,133.10-15,350.62-8,887.78

Finding the Fourth Proportional to 11,133.10, 15,350.62 and 8,887.78

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Solution

The fourth proportional to 11,133.10, 15,350.62 and 8,887.78 is: 12,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.10 : 15,350.62 = 8,887.78 : x
  2. Step 2: Convert to fraction form
    11,133.10/15,350.62 = 8,887.78/x
  3. Step 3: Cross multiply
    11,133.10x = 15,350.62 × 8,887.78
  4. Step 4: Simplify right side
    11,133.10x = 136,432,933.42
  5. Step 5: Solve for x
    x = 136,432,933.42/11,133.10
  6. Step 6: Final answer
    x = 12,254.71

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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.