Home / 28,442.96-42,660.12-10,921.04

Finding the Fourth Proportional to 28,442.96, 42,660.12 and 10,921.04

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Solution

The fourth proportional to 28,442.96, 42,660.12 and 10,921.04 is: 16,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.96 : 42,660.12 = 10,921.04 : x
  2. Step 2: Convert to fraction form
    28,442.96/42,660.12 = 10,921.04/x
  3. Step 3: Cross multiply
    28,442.96x = 42,660.12 × 10,921.04
  4. Step 4: Simplify right side
    28,442.96x = 465,892,876.92
  5. Step 5: Solve for x
    x = 465,892,876.92/28,442.96
  6. Step 6: Final answer
    x = 16,379.90

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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.