Home / 13,777,078.92-20,665,620-9,781,805.76

Finding the Fourth Proportional to 13,777,078.92, 20,665,620 and 9,781,805.76

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Solution

The fourth proportional to 13,777,078.92, 20,665,620 and 9,781,805.76 is: 14,672,709.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777,078.92 : 20,665,620 = 9,781,805.76 : x
  2. Step 2: Convert to fraction form
    13,777,078.92/20,665,620 = 9,781,805.76/x
  3. Step 3: Cross multiply
    13,777,078.92x = 20,665,620 × 9,781,805.76
  4. Step 4: Simplify right side
    13,777,078.92x = 202,147,080,749,971.19
  5. Step 5: Solve for x
    x = 202,147,080,749,971.19/13,777,078.92
  6. Step 6: Final answer
    x = 14,672,709.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.