Home / 20,506,920.28-28,298,990.05-11,339,249.56

Finding the Fourth Proportional to 20,506,920.28, 28,298,990.05 and 11,339,249.56

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Solution

The fourth proportional to 20,506,920.28, 28,298,990.05 and 11,339,249.56 is: 15,647,854.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506,920.28 : 28,298,990.05 = 11,339,249.56 : x
  2. Step 2: Convert to fraction form
    20,506,920.28/28,298,990.05 = 11,339,249.56/x
  3. Step 3: Cross multiply
    20,506,920.28x = 28,298,990.05 × 11,339,249.56
  4. Step 4: Simplify right side
    20,506,920.28x = 320,889,310,373,811.25
  5. Step 5: Solve for x
    x = 320,889,310,373,811.25/20,506,920.28
  6. Step 6: Final answer
    x = 15,647,854.77

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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.