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Finding the Fourth Proportional to 18,711.54, 28,052.42 and 10,805.08

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Solution

The fourth proportional to 18,711.54, 28,052.42 and 10,805.08 is: 16,199.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.54 : 28,052.42 = 10,805.08 : x
  2. Step 2: Convert to fraction form
    18,711.54/28,052.42 = 10,805.08/x
  3. Step 3: Cross multiply
    18,711.54x = 28,052.42 × 10,805.08
  4. Step 4: Simplify right side
    18,711.54x = 303,108,642.29
  5. Step 5: Solve for x
    x = 303,108,642.29/18,711.54
  6. Step 6: Final answer
    x = 16,199.02

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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.