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Finding the Fourth Proportional to 14,672.78, 20,256.29 and 11,479.29

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Solution

The fourth proportional to 14,672.78, 20,256.29 and 11,479.29 is: 15,847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.78 : 20,256.29 = 11,479.29 : x
  2. Step 2: Convert to fraction form
    14,672.78/20,256.29 = 11,479.29/x
  3. Step 3: Cross multiply
    14,672.78x = 20,256.29 × 11,479.29
  4. Step 4: Simplify right side
    14,672.78x = 232,527,769.84
  5. Step 5: Solve for x
    x = 232,527,769.84/14,672.78
  6. Step 6: Final answer
    x = 15,847.56

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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.