Home / 21,839.76-32,759.62-5,423.76

Finding the Fourth Proportional to 21,839.76, 32,759.62 and 5,423.76

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Solution

The fourth proportional to 21,839.76, 32,759.62 and 5,423.76 is: 8,135.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.76 : 32,759.62 = 5,423.76 : x
  2. Step 2: Convert to fraction form
    21,839.76/32,759.62 = 5,423.76/x
  3. Step 3: Cross multiply
    21,839.76x = 32,759.62 × 5,423.76
  4. Step 4: Simplify right side
    21,839.76x = 177,680,316.57
  5. Step 5: Solve for x
    x = 177,680,316.57/21,839.76
  6. Step 6: Final answer
    x = 8,135.64

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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.