Home / 20,447,245.18-28,216,743.96-11,279,885.50

Finding the Fourth Proportional to 20,447,245.18, 28,216,743.96 and 11,279,885.50

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Solution

The fourth proportional to 20,447,245.18, 28,216,743.96 and 11,279,885.50 is: 15,565,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447,245.18 : 28,216,743.96 = 11,279,885.50 : x
  2. Step 2: Convert to fraction form
    20,447,245.18/28,216,743.96 = 11,279,885.50/x
  3. Step 3: Cross multiply
    20,447,245.18x = 28,216,743.96 × 11,279,885.50
  4. Step 4: Simplify right side
    20,447,245.18x = 318,281,641,051,616.56
  5. Step 5: Solve for x
    x = 318,281,641,051,616.56/20,447,245.18
  6. Step 6: Final answer
    x = 15,565,991.32

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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.