Home / 20,309,320.80-28,027,589.04-11,142,228.96

Finding the Fourth Proportional to 20,309,320.80, 28,027,589.04 and 11,142,228.96

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Solution

The fourth proportional to 20,309,320.80, 28,027,589.04 and 11,142,228.96 is: 15,376,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309,320.80 : 28,027,589.04 = 11,142,228.96 : x
  2. Step 2: Convert to fraction form
    20,309,320.80/28,027,589.04 = 11,142,228.96/x
  3. Step 3: Cross multiply
    20,309,320.80x = 28,027,589.04 × 11,142,228.96
  4. Step 4: Simplify right side
    20,309,320.80x = 312,289,814,280,466.62
  5. Step 5: Solve for x
    x = 312,289,814,280,466.62/20,309,320.80
  6. Step 6: Final answer
    x = 15,376,674.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.