Home / 13,932.87-20,888.55-12,081.44

Finding the Fourth Proportional to 13,932.87, 20,888.55 and 12,081.44

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Solution

The fourth proportional to 13,932.87, 20,888.55 and 12,081.44 is: 18,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.87 : 20,888.55 = 12,081.44 : x
  2. Step 2: Convert to fraction form
    13,932.87/20,888.55 = 12,081.44/x
  3. Step 3: Cross multiply
    13,932.87x = 20,888.55 × 12,081.44
  4. Step 4: Simplify right side
    13,932.87x = 252,363,763.51
  5. Step 5: Solve for x
    x = 252,363,763.51/13,932.87
  6. Step 6: Final answer
    x = 18,112.83

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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.