Home / 21,949.20-32,923.80-18,320.40

Finding the Fourth Proportional to 21,949.20, 32,923.80 and 18,320.40

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Solution

The fourth proportional to 21,949.20, 32,923.80 and 18,320.40 is: 27,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.20 : 32,923.80 = 18,320.40 : x
  2. Step 2: Convert to fraction form
    21,949.20/32,923.80 = 18,320.40/x
  3. Step 3: Cross multiply
    21,949.20x = 32,923.80 × 18,320.40
  4. Step 4: Simplify right side
    21,949.20x = 603,177,185.52
  5. Step 5: Solve for x
    x = 603,177,185.52/21,949.20
  6. Step 6: Final answer
    x = 27,480.60

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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.