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Finding the Fourth Proportional to 18,908.56, 28,337.28 and 13,652.56

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Solution

The fourth proportional to 18,908.56, 28,337.28 and 13,652.56 is: 20,460.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.56 : 28,337.28 = 13,652.56 : x
  2. Step 2: Convert to fraction form
    18,908.56/28,337.28 = 13,652.56/x
  3. Step 3: Cross multiply
    18,908.56x = 28,337.28 × 13,652.56
  4. Step 4: Simplify right side
    18,908.56x = 386,876,415.44
  5. Step 5: Solve for x
    x = 386,876,415.44/18,908.56
  6. Step 6: Final answer
    x = 20,460.38

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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.