Home / 20,352.56-28,087.82-11,400.61

Finding the Fourth Proportional to 20,352.56, 28,087.82 and 11,400.61

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Solution

The fourth proportional to 20,352.56, 28,087.82 and 11,400.61 is: 15,733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.56 : 28,087.82 = 11,400.61 : x
  2. Step 2: Convert to fraction form
    20,352.56/28,087.82 = 11,400.61/x
  3. Step 3: Cross multiply
    20,352.56x = 28,087.82 × 11,400.61
  4. Step 4: Simplify right side
    20,352.56x = 320,218,281.57
  5. Step 5: Solve for x
    x = 320,218,281.57/20,352.56
  6. Step 6: Final answer
    x = 15,733.56

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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.