Home / 28,199.68-38,915.56-16,869.65

Finding the Fourth Proportional to 28,199.68, 38,915.56 and 16,869.65

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Solution

The fourth proportional to 28,199.68, 38,915.56 and 16,869.65 is: 23,280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.68 : 38,915.56 = 16,869.65 : x
  2. Step 2: Convert to fraction form
    28,199.68/38,915.56 = 16,869.65/x
  3. Step 3: Cross multiply
    28,199.68x = 38,915.56 × 16,869.65
  4. Step 4: Simplify right side
    28,199.68x = 656,491,703.26
  5. Step 5: Solve for x
    x = 656,491,703.26/28,199.68
  6. Step 6: Final answer
    x = 23,280.11

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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.