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Finding the Fourth Proportional to 15,679.59, 21,633.97 and 8,873.71

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Solution

The fourth proportional to 15,679.59, 21,633.97 and 8,873.71 is: 12,243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.59 : 21,633.97 = 8,873.71 : x
  2. Step 2: Convert to fraction form
    15,679.59/21,633.97 = 8,873.71/x
  3. Step 3: Cross multiply
    15,679.59x = 21,633.97 × 8,873.71
  4. Step 4: Simplify right side
    15,679.59x = 191,973,575.93
  5. Step 5: Solve for x
    x = 191,973,575.93/15,679.59
  6. Step 6: Final answer
    x = 12,243.53

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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.