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Finding the Fourth Proportional to 16,458.40, 24,671.40 and 8,139.70

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Solution

The fourth proportional to 16,458.40, 24,671.40 and 8,139.70 is: 12,201.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,458.40 : 24,671.40 = 8,139.70 : x
  2. Step 2: Convert to fraction form
    16,458.40/24,671.40 = 8,139.70/x
  3. Step 3: Cross multiply
    16,458.40x = 24,671.40 × 8,139.70
  4. Step 4: Simplify right side
    16,458.40x = 200,817,794.58
  5. Step 5: Solve for x
    x = 200,817,794.58/16,458.40
  6. Step 6: Final answer
    x = 12,201.54

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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.