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Finding the Fourth Proportional to 9,658.20, 14,473.80 and 7,687.20

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Solution

The fourth proportional to 9,658.20, 14,473.80 and 7,687.20 is: 11,520.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,658.20 : 14,473.80 = 7,687.20 : x
  2. Step 2: Convert to fraction form
    9,658.20/14,473.80 = 7,687.20/x
  3. Step 3: Cross multiply
    9,658.20x = 14,473.80 × 7,687.20
  4. Step 4: Simplify right side
    9,658.20x = 111,262,995.36
  5. Step 5: Solve for x
    x = 111,262,995.36/9,658.20
  6. Step 6: Final answer
    x = 11,520.06

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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.