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Finding the Fourth Proportional to 24,015.20, 36,022.80 and 21,390.80

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Solution

The fourth proportional to 24,015.20, 36,022.80 and 21,390.80 is: 32,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,015.20 : 36,022.80 = 21,390.80 : x
  2. Step 2: Convert to fraction form
    24,015.20/36,022.80 = 21,390.80/x
  3. Step 3: Cross multiply
    24,015.20x = 36,022.80 × 21,390.80
  4. Step 4: Simplify right side
    24,015.20x = 770,556,510.24
  5. Step 5: Solve for x
    x = 770,556,510.24/24,015.20
  6. Step 6: Final answer
    x = 32,086.20

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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.