Home / 25,776.36-38,679.10-10,983.72

Finding the Fourth Proportional to 25,776.36, 38,679.10 and 10,983.72

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Solution

The fourth proportional to 25,776.36, 38,679.10 and 10,983.72 is: 16,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,776.36 : 38,679.10 = 10,983.72 : x
  2. Step 2: Convert to fraction form
    25,776.36/38,679.10 = 10,983.72/x
  3. Step 3: Cross multiply
    25,776.36x = 38,679.10 × 10,983.72
  4. Step 4: Simplify right side
    25,776.36x = 424,840,404.25
  5. Step 5: Solve for x
    x = 424,840,404.25/25,776.36
  6. Step 6: Final answer
    x = 16,481.78

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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.