Home / 28,098.96-38,778.12-15,523.44

Finding the Fourth Proportional to 28,098.96, 38,778.12 and 15,523.44

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Solution

The fourth proportional to 28,098.96, 38,778.12 and 15,523.44 is: 21,423.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,098.96 : 38,778.12 = 15,523.44 : x
  2. Step 2: Convert to fraction form
    28,098.96/38,778.12 = 15,523.44/x
  3. Step 3: Cross multiply
    28,098.96x = 38,778.12 × 15,523.44
  4. Step 4: Simplify right side
    28,098.96x = 601,969,819.13
  5. Step 5: Solve for x
    x = 601,969,819.13/28,098.96
  6. Step 6: Final answer
    x = 21,423.21

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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.