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Finding the Fourth Proportional to 12,668.36, 17,482.04 and 7,002.86

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Solution

The fourth proportional to 12,668.36, 17,482.04 and 7,002.86 is: 9,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.36 : 17,482.04 = 7,002.86 : x
  2. Step 2: Convert to fraction form
    12,668.36/17,482.04 = 7,002.86/x
  3. Step 3: Cross multiply
    12,668.36x = 17,482.04 × 7,002.86
  4. Step 4: Simplify right side
    12,668.36x = 122,424,278.63
  5. Step 5: Solve for x
    x = 122,424,278.63/12,668.36
  6. Step 6: Final answer
    x = 9,663.78

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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.