Home / 28,659.66-42,999.52-11,141.78

Finding the Fourth Proportional to 28,659.66, 42,999.52 and 11,141.78

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Solution

The fourth proportional to 28,659.66, 42,999.52 and 11,141.78 is: 16,716.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.66 : 42,999.52 = 11,141.78 : x
  2. Step 2: Convert to fraction form
    28,659.66/42,999.52 = 11,141.78/x
  3. Step 3: Cross multiply
    28,659.66x = 42,999.52 × 11,141.78
  4. Step 4: Simplify right side
    28,659.66x = 479,091,191.95
  5. Step 5: Solve for x
    x = 479,091,191.95/28,659.66
  6. Step 6: Final answer
    x = 16,716.57

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1.5x scale

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.