Home / 20,809,619.80-31,209,764.10-13,671,251.80

Finding the Fourth Proportional to 20,809,619.80, 31,209,764.10 and 13,671,251.80

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Solution

The fourth proportional to 20,809,619.80, 31,209,764.10 and 13,671,251.80 is: 20,503,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,619.80 : 31,209,764.10 = 13,671,251.80 : x
  2. Step 2: Convert to fraction form
    20,809,619.80/31,209,764.10 = 13,671,251.80/x
  3. Step 3: Cross multiply
    20,809,619.80x = 31,209,764.10 × 13,671,251.80
  4. Step 4: Simplify right side
    20,809,619.80x = 426,676,543,629,700.44
  5. Step 5: Solve for x
    x = 426,676,543,629,700.44/20,809,619.80
  6. Step 6: Final answer
    x = 20,503,812.55

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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.