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Finding the Fourth Proportional to 18,691.44, 28,037.26 and 4,840.44

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Solution

The fourth proportional to 18,691.44, 28,037.26 and 4,840.44 is: 7,260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.44 : 28,037.26 = 4,840.44 : x
  2. Step 2: Convert to fraction form
    18,691.44/28,037.26 = 4,840.44/x
  3. Step 3: Cross multiply
    18,691.44x = 28,037.26 × 4,840.44
  4. Step 4: Simplify right side
    18,691.44x = 135,712,674.79
  5. Step 5: Solve for x
    x = 135,712,674.79/18,691.44
  6. Step 6: Final answer
    x = 7,260.69

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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.