Home / 20,430,144.20-28,194,868.50-11,262,770.12

Finding the Fourth Proportional to 20,430,144.20, 28,194,868.50 and 11,262,770.12

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Solution

The fourth proportional to 20,430,144.20, 28,194,868.50 and 11,262,770.12 is: 15,543,322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430,144.20 : 28,194,868.50 = 11,262,770.12 : x
  2. Step 2: Convert to fraction form
    20,430,144.20/28,194,868.50 = 11,262,770.12/x
  3. Step 3: Cross multiply
    20,430,144.20x = 28,194,868.50 × 11,262,770.12
  4. Step 4: Simplify right side
    20,430,144.20x = 317,552,322,479,129.19
  5. Step 5: Solve for x
    x = 317,552,322,479,129.19/20,430,144.20
  6. Step 6: Final answer
    x = 15,543,322.62

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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.