Home / 20,753,140.80-31,129,711.20-8,809,204.80

Finding the Fourth Proportional to 20,753,140.80, 31,129,711.20 and 8,809,204.80

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Solution

The fourth proportional to 20,753,140.80, 31,129,711.20 and 8,809,204.80 is: 13,213,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753,140.80 : 31,129,711.20 = 8,809,204.80 : x
  2. Step 2: Convert to fraction form
    20,753,140.80/31,129,711.20 = 8,809,204.80/x
  3. Step 3: Cross multiply
    20,753,140.80x = 31,129,711.20 × 8,809,204.80
  4. Step 4: Simplify right side
    20,753,140.80x = 274,228,001,325,653.78
  5. Step 5: Solve for x
    x = 274,228,001,325,653.78/20,753,140.80
  6. Step 6: Final answer
    x = 13,213,807.20

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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.