Home / 35,488.15-48,971.86-20,379.62

Finding the Fourth Proportional to 35,488.15, 48,971.86 and 20,379.62

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Solution

The fourth proportional to 35,488.15, 48,971.86 and 20,379.62 is: 28,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,488.15 : 48,971.86 = 20,379.62 : x
  2. Step 2: Convert to fraction form
    35,488.15/48,971.86 = 20,379.62/x
  3. Step 3: Cross multiply
    35,488.15x = 48,971.86 × 20,379.62
  4. Step 4: Simplify right side
    35,488.15x = 998,027,968.97
  5. Step 5: Solve for x
    x = 998,027,968.97/35,488.15
  6. Step 6: Final answer
    x = 28,122.85

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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.