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Finding the Fourth Proportional to 25,367.84, 34,923.12 and 21,816.80

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Solution

The fourth proportional to 25,367.84, 34,923.12 and 21,816.80 is: 30,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,367.84 : 34,923.12 = 21,816.80 : x
  2. Step 2: Convert to fraction form
    25,367.84/34,923.12 = 21,816.80/x
  3. Step 3: Cross multiply
    25,367.84x = 34,923.12 × 21,816.80
  4. Step 4: Simplify right side
    25,367.84x = 761,910,724.42
  5. Step 5: Solve for x
    x = 761,910,724.42/25,367.84
  6. Step 6: Final answer
    x = 30,034.51

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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.