Home / 28,236.53-38,944.87-20,680.13

Finding the Fourth Proportional to 28,236.53, 38,944.87 and 20,680.13

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Solution

The fourth proportional to 28,236.53, 38,944.87 and 20,680.13 is: 28,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.53 : 38,944.87 = 20,680.13 : x
  2. Step 2: Convert to fraction form
    28,236.53/38,944.87 = 20,680.13/x
  3. Step 3: Cross multiply
    28,236.53x = 38,944.87 × 20,680.13
  4. Step 4: Simplify right side
    28,236.53x = 805,385,020.09
  5. Step 5: Solve for x
    x = 805,385,020.09/28,236.53
  6. Step 6: Final answer
    x = 28,522.80

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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.