Home / 10,462.80-15,679.62-7,862.70

Finding the Fourth Proportional to 10,462.80, 15,679.62 and 7,862.70

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Solution

The fourth proportional to 10,462.80, 15,679.62 and 7,862.70 is: 11,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,462.80 : 15,679.62 = 7,862.70 : x
  2. Step 2: Convert to fraction form
    10,462.80/15,679.62 = 7,862.70/x
  3. Step 3: Cross multiply
    10,462.80x = 15,679.62 × 7,862.70
  4. Step 4: Simplify right side
    10,462.80x = 123,284,148.17
  5. Step 5: Solve for x
    x = 123,284,148.17/10,462.80
  6. Step 6: Final answer
    x = 11,783.09

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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.