Home / 20,639,116.74-30,891,308.84-15,172,764.54

Finding the Fourth Proportional to 20,639,116.74, 30,891,308.84 and 15,172,764.54

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Solution

The fourth proportional to 20,639,116.74, 30,891,308.84 and 15,172,764.54 is: 22,709,622.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639,116.74 : 30,891,308.84 = 15,172,764.54 : x
  2. Step 2: Convert to fraction form
    20,639,116.74/30,891,308.84 = 15,172,764.54/x
  3. Step 3: Cross multiply
    20,639,116.74x = 30,891,308.84 × 15,172,764.54
  4. Step 4: Simplify right side
    20,639,116.74x = 468,706,555,361,740.50
  5. Step 5: Solve for x
    x = 468,706,555,361,740.50/20,639,116.74
  6. Step 6: Final answer
    x = 22,709,622.76

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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.