Home / 10,978.35-15,149.97-6,262.71

Finding the Fourth Proportional to 10,978.35, 15,149.97 and 6,262.71

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Solution

The fourth proportional to 10,978.35, 15,149.97 and 6,262.71 is: 8,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,978.35 : 15,149.97 = 6,262.71 : x
  2. Step 2: Convert to fraction form
    10,978.35/15,149.97 = 6,262.71/x
  3. Step 3: Cross multiply
    10,978.35x = 15,149.97 × 6,262.71
  4. Step 4: Simplify right side
    10,978.35x = 94,879,868.62
  5. Step 5: Solve for x
    x = 94,879,868.62/10,978.35
  6. Step 6: Final answer
    x = 8,642.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.