Home / 20,407.68-28,166.33-11,914.83

Finding the Fourth Proportional to 20,407.68, 28,166.33 and 11,914.83

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Solution

The fourth proportional to 20,407.68, 28,166.33 and 11,914.83 is: 16,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.68 : 28,166.33 = 11,914.83 : x
  2. Step 2: Convert to fraction form
    20,407.68/28,166.33 = 11,914.83/x
  3. Step 3: Cross multiply
    20,407.68x = 28,166.33 × 11,914.83
  4. Step 4: Simplify right side
    20,407.68x = 335,597,063.46
  5. Step 5: Solve for x
    x = 335,597,063.46/20,407.68
  6. Step 6: Final answer
    x = 16,444.65

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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.