Home / 10,660.75-15,970.34-6,490.41

Finding the Fourth Proportional to 10,660.75, 15,970.34 and 6,490.41

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Solution

The fourth proportional to 10,660.75, 15,970.34 and 6,490.41 is: 9,722.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.75 : 15,970.34 = 6,490.41 : x
  2. Step 2: Convert to fraction form
    10,660.75/15,970.34 = 6,490.41/x
  3. Step 3: Cross multiply
    10,660.75x = 15,970.34 × 6,490.41
  4. Step 4: Simplify right side
    10,660.75x = 103,654,046.33
  5. Step 5: Solve for x
    x = 103,654,046.33/10,660.75
  6. Step 6: Final answer
    x = 9,722.96

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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.