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Finding the Fourth Proportional to 28,899.80, 43,364.10 and 16,429.40

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Solution

The fourth proportional to 28,899.80, 43,364.10 and 16,429.40 is: 24,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.80 : 43,364.10 = 16,429.40 : x
  2. Step 2: Convert to fraction form
    28,899.80/43,364.10 = 16,429.40/x
  3. Step 3: Cross multiply
    28,899.80x = 43,364.10 × 16,429.40
  4. Step 4: Simplify right side
    28,899.80x = 712,446,144.54
  5. Step 5: Solve for x
    x = 712,446,144.54/28,899.80
  6. Step 6: Final answer
    x = 24,652.29

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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.