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Finding the Fourth Proportional to 28,939.32, 43,408.53 and 9,217.71

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Solution

The fourth proportional to 28,939.32, 43,408.53 and 9,217.71 is: 13,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.32 : 43,408.53 = 9,217.71 : x
  2. Step 2: Convert to fraction form
    28,939.32/43,408.53 = 9,217.71/x
  3. Step 3: Cross multiply
    28,939.32x = 43,408.53 × 9,217.71
  4. Step 4: Simplify right side
    28,939.32x = 400,127,241.07
  5. Step 5: Solve for x
    x = 400,127,241.07/28,939.32
  6. Step 6: Final answer
    x = 13,826.42

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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.