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Finding the Fourth Proportional to 22,672.88, 31,288 and 12,600.72

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Solution

The fourth proportional to 22,672.88, 31,288 and 12,600.72 is: 17,388.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,672.88 : 31,288 = 12,600.72 : x
  2. Step 2: Convert to fraction form
    22,672.88/31,288 = 12,600.72/x
  3. Step 3: Cross multiply
    22,672.88x = 31,288 × 12,600.72
  4. Step 4: Simplify right side
    22,672.88x = 394,251,327.36
  5. Step 5: Solve for x
    x = 394,251,327.36/22,672.88
  6. Step 6: Final answer
    x = 17,388.67

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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.