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Finding the Fourth Proportional to 9,459.65, 12,959.79 and 9,104.95

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Solution

The fourth proportional to 9,459.65, 12,959.79 and 9,104.95 is: 12,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,459.65 : 12,959.79 = 9,104.95 : x
  2. Step 2: Convert to fraction form
    9,459.65/12,959.79 = 9,104.95/x
  3. Step 3: Cross multiply
    9,459.65x = 12,959.79 × 9,104.95
  4. Step 4: Simplify right side
    9,459.65x = 117,998,149.12
  5. Step 5: Solve for x
    x = 117,998,149.12/9,459.65
  6. Step 6: Final answer
    x = 12,473.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.