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Finding the Fourth Proportional to 28,991.42, 40,003.27 and 16,893.89

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Solution

The fourth proportional to 28,991.42, 40,003.27 and 16,893.89 is: 23,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.42 : 40,003.27 = 16,893.89 : x
  2. Step 2: Convert to fraction form
    28,991.42/40,003.27 = 16,893.89/x
  3. Step 3: Cross multiply
    28,991.42x = 40,003.27 × 16,893.89
  4. Step 4: Simplify right side
    28,991.42x = 675,810,863.29
  5. Step 5: Solve for x
    x = 675,810,863.29/28,991.42
  6. Step 6: Final answer
    x = 23,310.72

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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.