Home / 28,078.78-38,753.68-16,748.96

Finding the Fourth Proportional to 28,078.78, 38,753.68 and 16,748.96

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Solution

The fourth proportional to 28,078.78, 38,753.68 and 16,748.96 is: 23,116.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.78 : 38,753.68 = 16,748.96 : x
  2. Step 2: Convert to fraction form
    28,078.78/38,753.68 = 16,748.96/x
  3. Step 3: Cross multiply
    28,078.78x = 38,753.68 × 16,748.96
  4. Step 4: Simplify right side
    28,078.78x = 649,083,836.17
  5. Step 5: Solve for x
    x = 649,083,836.17/28,078.78
  6. Step 6: Final answer
    x = 23,116.53

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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.