Home / 18,676,425.87-28,019,196.99-7,161,687.45

Finding the Fourth Proportional to 18,676,425.87, 28,019,196.99 and 7,161,687.45

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Solution

The fourth proportional to 18,676,425.87, 28,019,196.99 and 7,161,687.45 is: 10,744,279.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676,425.87 : 28,019,196.99 = 7,161,687.45 : x
  2. Step 2: Convert to fraction form
    18,676,425.87/28,019,196.99 = 7,161,687.45/x
  3. Step 3: Cross multiply
    18,676,425.87x = 28,019,196.99 × 7,161,687.45
  4. Step 4: Simplify right side
    18,676,425.87x = 200,664,731,442,360.78
  5. Step 5: Solve for x
    x = 200,664,731,442,360.78/18,676,425.87
  6. Step 6: Final answer
    x = 10,744,279.06

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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.