Home / 20,829,218.73-28,744,000.79-11,662,189.53

Finding the Fourth Proportional to 20,829,218.73, 28,744,000.79 and 11,662,189.53

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Solution

The fourth proportional to 20,829,218.73, 28,744,000.79 and 11,662,189.53 is: 16,093,641.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,218.73 : 28,744,000.79 = 11,662,189.53 : x
  2. Step 2: Convert to fraction form
    20,829,218.73/28,744,000.79 = 11,662,189.53/x
  3. Step 3: Cross multiply
    20,829,218.73x = 28,744,000.79 × 11,662,189.53
  4. Step 4: Simplify right side
    20,829,218.73x = 335,217,985,005,138.75
  5. Step 5: Solve for x
    x = 335,217,985,005,138.75/20,829,218.73
  6. Step 6: Final answer
    x = 16,093,641.79

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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.