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Finding the Fourth Proportional to 10,264.80, 15,364.80 and 8,061.60

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Solution

The fourth proportional to 10,264.80, 15,364.80 and 8,061.60 is: 12,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,264.80 : 15,364.80 = 8,061.60 : x
  2. Step 2: Convert to fraction form
    10,264.80/15,364.80 = 8,061.60/x
  3. Step 3: Cross multiply
    10,264.80x = 15,364.80 × 8,061.60
  4. Step 4: Simplify right side
    10,264.80x = 123,864,871.68
  5. Step 5: Solve for x
    x = 123,864,871.68/10,264.80
  6. Step 6: Final answer
    x = 12,066.95

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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.