Home / 20,421,542.34-28,181,729.01-11,254,185.09

Finding the Fourth Proportional to 20,421,542.34, 28,181,729.01 and 11,254,185.09

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Solution

The fourth proportional to 20,421,542.34, 28,181,729.01 and 11,254,185.09 is: 15,530,775.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,542.34 : 28,181,729.01 = 11,254,185.09 : x
  2. Step 2: Convert to fraction form
    20,421,542.34/28,181,729.01 = 11,254,185.09/x
  3. Step 3: Cross multiply
    20,421,542.34x = 28,181,729.01 × 11,254,185.09
  4. Step 4: Simplify right side
    20,421,542.34x = 317,162,394,434,762.50
  5. Step 5: Solve for x
    x = 317,162,394,434,762.50/20,421,542.34
  6. Step 6: Final answer
    x = 15,530,775.74

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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.