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Finding the Fourth Proportional to 12,795.64, 17,668.88 and 8,023.61

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Solution

The fourth proportional to 12,795.64, 17,668.88 and 8,023.61 is: 11,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.64 : 17,668.88 = 8,023.61 : x
  2. Step 2: Convert to fraction form
    12,795.64/17,668.88 = 8,023.61/x
  3. Step 3: Cross multiply
    12,795.64x = 17,668.88 × 8,023.61
  4. Step 4: Simplify right side
    12,795.64x = 141,768,182.14
  5. Step 5: Solve for x
    x = 141,768,182.14/12,795.64
  6. Step 6: Final answer
    x = 11,079.42

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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.