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Finding the Fourth Proportional to 12,668.39, 17,482.40 and 7,079.39

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Solution

The fourth proportional to 12,668.39, 17,482.40 and 7,079.39 is: 9,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.39 : 17,482.40 = 7,079.39 : x
  2. Step 2: Convert to fraction form
    12,668.39/17,482.40 = 7,079.39/x
  3. Step 3: Cross multiply
    12,668.39x = 17,482.40 × 7,079.39
  4. Step 4: Simplify right side
    12,668.39x = 123,764,789.14
  5. Step 5: Solve for x
    x = 123,764,789.14/12,668.39
  6. Step 6: Final answer
    x = 9,769.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.