Home / 20,373.70-28,121.68-13,301.18

Finding the Fourth Proportional to 20,373.70, 28,121.68 and 13,301.18

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Solution

The fourth proportional to 20,373.70, 28,121.68 and 13,301.18 is: 18,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.70 : 28,121.68 = 13,301.18 : x
  2. Step 2: Convert to fraction form
    20,373.70/28,121.68 = 13,301.18/x
  3. Step 3: Cross multiply
    20,373.70x = 28,121.68 × 13,301.18
  4. Step 4: Simplify right side
    20,373.70x = 374,051,527.58
  5. Step 5: Solve for x
    x = 374,051,527.58/20,373.70
  6. Step 6: Final answer
    x = 18,359.53

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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.