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Finding the Fourth Proportional to 18,975.52, 28,463.34 and 8,575.12

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Solution

The fourth proportional to 18,975.52, 28,463.34 and 8,575.12 is: 12,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.52 : 28,463.34 = 8,575.12 : x
  2. Step 2: Convert to fraction form
    18,975.52/28,463.34 = 8,575.12/x
  3. Step 3: Cross multiply
    18,975.52x = 28,463.34 × 8,575.12
  4. Step 4: Simplify right side
    18,975.52x = 244,076,556.10
  5. Step 5: Solve for x
    x = 244,076,556.10/18,975.52
  6. Step 6: Final answer
    x = 12,862.71

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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.