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Finding the Fourth Proportional to 18,745.56, 28,122.53 and 7,058.88

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Solution

The fourth proportional to 18,745.56, 28,122.53 and 7,058.88 is: 10,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.56 : 28,122.53 = 7,058.88 : x
  2. Step 2: Convert to fraction form
    18,745.56/28,122.53 = 7,058.88/x
  3. Step 3: Cross multiply
    18,745.56x = 28,122.53 × 7,058.88
  4. Step 4: Simplify right side
    18,745.56x = 198,513,529.27
  5. Step 5: Solve for x
    x = 198,513,529.27/18,745.56
  6. Step 6: Final answer
    x = 10,589.90

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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.