Home / 12,765.20-19,153.60-5,741.36

Finding the Fourth Proportional to 12,765.20, 19,153.60 and 5,741.36

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Solution

The fourth proportional to 12,765.20, 19,153.60 and 5,741.36 is: 8,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.20 : 19,153.60 = 5,741.36 : x
  2. Step 2: Convert to fraction form
    12,765.20/19,153.60 = 5,741.36/x
  3. Step 3: Cross multiply
    12,765.20x = 19,153.60 × 5,741.36
  4. Step 4: Simplify right side
    12,765.20x = 109,967,712.90
  5. Step 5: Solve for x
    x = 109,967,712.90/12,765.20
  6. Step 6: Final answer
    x = 8,614.65

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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.