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Finding the Fourth Proportional to 18,471.84, 27,807.57 and 16,864.80

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Solution

The fourth proportional to 18,471.84, 27,807.57 and 16,864.80 is: 25,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.84 : 27,807.57 = 16,864.80 : x
  2. Step 2: Convert to fraction form
    18,471.84/27,807.57 = 16,864.80/x
  3. Step 3: Cross multiply
    18,471.84x = 27,807.57 × 16,864.80
  4. Step 4: Simplify right side
    18,471.84x = 468,969,106.54
  5. Step 5: Solve for x
    x = 468,969,106.54/18,471.84
  6. Step 6: Final answer
    x = 25,388.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.