Home / 15,850.28-21,879.57-9,141.66

Finding the Fourth Proportional to 15,850.28, 21,879.57 and 9,141.66

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Solution

The fourth proportional to 15,850.28, 21,879.57 and 9,141.66 is: 12,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.28 : 21,879.57 = 9,141.66 : x
  2. Step 2: Convert to fraction form
    15,850.28/21,879.57 = 9,141.66/x
  3. Step 3: Cross multiply
    15,850.28x = 21,879.57 × 9,141.66
  4. Step 4: Simplify right side
    15,850.28x = 200,015,572.75
  5. Step 5: Solve for x
    x = 200,015,572.75/15,850.28
  6. Step 6: Final answer
    x = 12,619.05

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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.