Home / 21,939.20-32,908.80-12,073.40

Finding the Fourth Proportional to 21,939.20, 32,908.80 and 12,073.40

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Solution

The fourth proportional to 21,939.20, 32,908.80 and 12,073.40 is: 18,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.20 : 32,908.80 = 12,073.40 : x
  2. Step 2: Convert to fraction form
    21,939.20/32,908.80 = 12,073.40/x
  3. Step 3: Cross multiply
    21,939.20x = 32,908.80 × 12,073.40
  4. Step 4: Simplify right side
    21,939.20x = 397,321,105.92
  5. Step 5: Solve for x
    x = 397,321,105.92/21,939.20
  6. Step 6: Final answer
    x = 18,110.10

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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.