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Finding the Fourth Proportional to 15,328.76, 22,976.78 and 8,740.76

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Solution

The fourth proportional to 15,328.76, 22,976.78 and 8,740.76 is: 13,101.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.76 : 22,976.78 = 8,740.76 : x
  2. Step 2: Convert to fraction form
    15,328.76/22,976.78 = 8,740.76/x
  3. Step 3: Cross multiply
    15,328.76x = 22,976.78 × 8,740.76
  4. Step 4: Simplify right side
    15,328.76x = 200,834,360.97
  5. Step 5: Solve for x
    x = 200,834,360.97/15,328.76
  6. Step 6: Final answer
    x = 13,101.81

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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.