Home / 12,127,843.20-18,191,764.80-7,823,171.10

Finding the Fourth Proportional to 12,127,843.20, 18,191,764.80 and 7,823,171.10

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Solution

The fourth proportional to 12,127,843.20, 18,191,764.80 and 7,823,171.10 is: 11,734,756.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,843.20 : 18,191,764.80 = 7,823,171.10 : x
  2. Step 2: Convert to fraction form
    12,127,843.20/18,191,764.80 = 7,823,171.10/x
  3. Step 3: Cross multiply
    12,127,843.20x = 18,191,764.80 × 7,823,171.10
  4. Step 4: Simplify right side
    12,127,843.20x = 142,317,288,641,357.28
  5. Step 5: Solve for x
    x = 142,317,288,641,357.28/12,127,843.20
  6. Step 6: Final answer
    x = 11,734,756.65

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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.