Home / 11,135.88-15,382.50-8,913.66

Finding the Fourth Proportional to 11,135.88, 15,382.50 and 8,913.66

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Solution

The fourth proportional to 11,135.88, 15,382.50 and 8,913.66 is: 12,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.88 : 15,382.50 = 8,913.66 : x
  2. Step 2: Convert to fraction form
    11,135.88/15,382.50 = 8,913.66/x
  3. Step 3: Cross multiply
    11,135.88x = 15,382.50 × 8,913.66
  4. Step 4: Simplify right side
    11,135.88x = 137,114,374.95
  5. Step 5: Solve for x
    x = 137,114,374.95/11,135.88
  6. Step 6: Final answer
    x = 12,312.85

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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.