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Finding the Fourth Proportional to 14,672.60, 21,959.49 and 13,458.68

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Solution

The fourth proportional to 14,672.60, 21,959.49 and 13,458.68 is: 20,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.60 : 21,959.49 = 13,458.68 : x
  2. Step 2: Convert to fraction form
    14,672.60/21,959.49 = 13,458.68/x
  3. Step 3: Cross multiply
    14,672.60x = 21,959.49 × 13,458.68
  4. Step 4: Simplify right side
    14,672.60x = 295,545,748.87
  5. Step 5: Solve for x
    x = 295,545,748.87/14,672.60
  6. Step 6: Final answer
    x = 20,142.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.