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Finding the Fourth Proportional to 10,863.20, 16,294.80 and 9,768.80

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Solution

The fourth proportional to 10,863.20, 16,294.80 and 9,768.80 is: 14,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.20 : 16,294.80 = 9,768.80 : x
  2. Step 2: Convert to fraction form
    10,863.20/16,294.80 = 9,768.80/x
  3. Step 3: Cross multiply
    10,863.20x = 16,294.80 × 9,768.80
  4. Step 4: Simplify right side
    10,863.20x = 159,180,642.24
  5. Step 5: Solve for x
    x = 159,180,642.24/10,863.20
  6. Step 6: Final answer
    x = 14,653.20

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1.5x scale

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.