Home / 13,177.72-19,769.23-4,857.78

Finding the Fourth Proportional to 13,177.72, 19,769.23 and 4,857.78

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Solution

The fourth proportional to 13,177.72, 19,769.23 and 4,857.78 is: 7,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.72 : 19,769.23 = 4,857.78 : x
  2. Step 2: Convert to fraction form
    13,177.72/19,769.23 = 4,857.78/x
  3. Step 3: Cross multiply
    13,177.72x = 19,769.23 × 4,857.78
  4. Step 4: Simplify right side
    13,177.72x = 96,034,557.96
  5. Step 5: Solve for x
    x = 96,034,557.96/13,177.72
  6. Step 6: Final answer
    x = 7,287.65

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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.