Home / 8,963.20-13,428.60-7,310.80

Finding the Fourth Proportional to 8,963.20, 13,428.60 and 7,310.80

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Solution

The fourth proportional to 8,963.20, 13,428.60 and 7,310.80 is: 10,952.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.20 : 13,428.60 = 7,310.80 : x
  2. Step 2: Convert to fraction form
    8,963.20/13,428.60 = 7,310.80/x
  3. Step 3: Cross multiply
    8,963.20x = 13,428.60 × 7,310.80
  4. Step 4: Simplify right side
    8,963.20x = 98,173,808.88
  5. Step 5: Solve for x
    x = 98,173,808.88/8,963.20
  6. Step 6: Final answer
    x = 10,952.99

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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.