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Finding the Fourth Proportional to 9,580.80, 14,371.20 and 8,932.80

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Solution

The fourth proportional to 9,580.80, 14,371.20 and 8,932.80 is: 13,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,580.80 : 14,371.20 = 8,932.80 : x
  2. Step 2: Convert to fraction form
    9,580.80/14,371.20 = 8,932.80/x
  3. Step 3: Cross multiply
    9,580.80x = 14,371.20 × 8,932.80
  4. Step 4: Simplify right side
    9,580.80x = 128,375,055.36
  5. Step 5: Solve for x
    x = 128,375,055.36/9,580.80
  6. Step 6: Final answer
    x = 13,399.20

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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.