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Finding the Fourth Proportional to 16,138.80, 24,216.80 and 6,278.40

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Solution

The fourth proportional to 16,138.80, 24,216.80 and 6,278.40 is: 9,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,138.80 : 24,216.80 = 6,278.40 : x
  2. Step 2: Convert to fraction form
    16,138.80/24,216.80 = 6,278.40/x
  3. Step 3: Cross multiply
    16,138.80x = 24,216.80 × 6,278.40
  4. Step 4: Simplify right side
    16,138.80x = 152,042,757.12
  5. Step 5: Solve for x
    x = 152,042,757.12/16,138.80
  6. Step 6: Final answer
    x = 9,420.95

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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.