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Finding the Fourth Proportional to 18,655.50, 25,745.54 and 10,589.72

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Solution

The fourth proportional to 18,655.50, 25,745.54 and 10,589.72 is: 14,614.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.50 : 25,745.54 = 10,589.72 : x
  2. Step 2: Convert to fraction form
    18,655.50/25,745.54 = 10,589.72/x
  3. Step 3: Cross multiply
    18,655.50x = 25,745.54 × 10,589.72
  4. Step 4: Simplify right side
    18,655.50x = 272,638,059.85
  5. Step 5: Solve for x
    x = 272,638,059.85/18,655.50
  6. Step 6: Final answer
    x = 14,614.35

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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.