Home / 20,869,911.90-31,290,199.91-9,192,742.52

Finding the Fourth Proportional to 20,869,911.90, 31,290,199.91 and 9,192,742.52

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Solution

The fourth proportional to 20,869,911.90, 31,290,199.91 and 9,192,742.52 is: 13,782,652.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869,911.90 : 31,290,199.91 = 9,192,742.52 : x
  2. Step 2: Convert to fraction form
    20,869,911.90/31,290,199.91 = 9,192,742.52/x
  3. Step 3: Cross multiply
    20,869,911.90x = 31,290,199.91 × 9,192,742.52
  4. Step 4: Simplify right side
    20,869,911.90x = 287,642,751,055,724.44
  5. Step 5: Solve for x
    x = 287,642,751,055,724.44/20,869,911.90
  6. Step 6: Final answer
    x = 13,782,652.87

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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.