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Finding the Fourth Proportional to 22,409.80, 30,924.39 and 12,339.11

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Solution

The fourth proportional to 22,409.80, 30,924.39 and 12,339.11 is: 17,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,409.80 : 30,924.39 = 12,339.11 : x
  2. Step 2: Convert to fraction form
    22,409.80/30,924.39 = 12,339.11/x
  3. Step 3: Cross multiply
    22,409.80x = 30,924.39 × 12,339.11
  4. Step 4: Simplify right side
    22,409.80x = 381,579,527.20
  5. Step 5: Solve for x
    x = 381,579,527.20/22,409.80
  6. Step 6: Final answer
    x = 17,027.35

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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.