Home / 20,805.28-28,711.53-11,373.84

Finding the Fourth Proportional to 20,805.28, 28,711.53 and 11,373.84

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Solution

The fourth proportional to 20,805.28, 28,711.53 and 11,373.84 is: 15,696.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.28 : 28,711.53 = 11,373.84 : x
  2. Step 2: Convert to fraction form
    20,805.28/28,711.53 = 11,373.84/x
  3. Step 3: Cross multiply
    20,805.28x = 28,711.53 × 11,373.84
  4. Step 4: Simplify right side
    20,805.28x = 326,560,348.38
  5. Step 5: Solve for x
    x = 326,560,348.38/20,805.28
  6. Step 6: Final answer
    x = 15,696.03

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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.