Home / 10,657.98-15,982.92-5,105.43

Finding the Fourth Proportional to 10,657.98, 15,982.92 and 5,105.43

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Solution

The fourth proportional to 10,657.98, 15,982.92 and 5,105.43 is: 7,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657.98 : 15,982.92 = 5,105.43 : x
  2. Step 2: Convert to fraction form
    10,657.98/15,982.92 = 5,105.43/x
  3. Step 3: Cross multiply
    10,657.98x = 15,982.92 × 5,105.43
  4. Step 4: Simplify right side
    10,657.98x = 81,599,679.26
  5. Step 5: Solve for x
    x = 81,599,679.26/10,657.98
  6. Step 6: Final answer
    x = 7,656.20

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1.5x scale

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.