Home / 10,489.07-15,740.88-6,782.11

Finding the Fourth Proportional to 10,489.07, 15,740.88 and 6,782.11

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Solution

The fourth proportional to 10,489.07, 15,740.88 and 6,782.11 is: 10,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.07 : 15,740.88 = 6,782.11 : x
  2. Step 2: Convert to fraction form
    10,489.07/15,740.88 = 6,782.11/x
  3. Step 3: Cross multiply
    10,489.07x = 15,740.88 × 6,782.11
  4. Step 4: Simplify right side
    10,489.07x = 106,756,379.66
  5. Step 5: Solve for x
    x = 106,756,379.66/10,489.07
  6. Step 6: Final answer
    x = 10,177.87

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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.