Home / 20,854,193.70-31,281,290.55-18,870,147.30

Finding the Fourth Proportional to 20,854,193.70, 31,281,290.55 and 18,870,147.30

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Solution

The fourth proportional to 20,854,193.70, 31,281,290.55 and 18,870,147.30 is: 28,305,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,193.70 : 31,281,290.55 = 18,870,147.30 : x
  2. Step 2: Convert to fraction form
    20,854,193.70/31,281,290.55 = 18,870,147.30/x
  3. Step 3: Cross multiply
    20,854,193.70x = 31,281,290.55 × 18,870,147.30
  4. Step 4: Simplify right side
    20,854,193.70x = 590,282,560,412,598
  5. Step 5: Solve for x
    x = 590,282,560,412,598/20,854,193.70
  6. Step 6: Final answer
    x = 28,305,220.95

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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.