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Finding the Fourth Proportional to 14,398.87, 21,608.39 and 6,612.79

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Solution

The fourth proportional to 14,398.87, 21,608.39 and 6,612.79 is: 9,923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,398.87 : 21,608.39 = 6,612.79 : x
  2. Step 2: Convert to fraction form
    14,398.87/21,608.39 = 6,612.79/x
  3. Step 3: Cross multiply
    14,398.87x = 21,608.39 × 6,612.79
  4. Step 4: Simplify right side
    14,398.87x = 142,891,745.31
  5. Step 5: Solve for x
    x = 142,891,745.31/14,398.87
  6. Step 6: Final answer
    x = 9,923.82

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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.