Home / 20,446,980.68-28,216,379.22-11,279,621

Finding the Fourth Proportional to 20,446,980.68, 28,216,379.22 and 11,279,621

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Solution

The fourth proportional to 20,446,980.68, 28,216,379.22 and 11,279,621 is: 15,565,626.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446,980.68 : 28,216,379.22 = 11,279,621 : x
  2. Step 2: Convert to fraction form
    20,446,980.68/28,216,379.22 = 11,279,621/x
  3. Step 3: Cross multiply
    20,446,980.68x = 28,216,379.22 × 11,279,621
  4. Step 4: Simplify right side
    20,446,980.68x = 318,270,063,593,875.62
  5. Step 5: Solve for x
    x = 318,270,063,593,875.62/20,446,980.68
  6. Step 6: Final answer
    x = 15,565,626.46

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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.