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Finding the Fourth Proportional to 28,902.80, 43,368.60 and 16,432.40

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Solution

The fourth proportional to 28,902.80, 43,368.60 and 16,432.40 is: 24,656.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.80 : 43,368.60 = 16,432.40 : x
  2. Step 2: Convert to fraction form
    28,902.80/43,368.60 = 16,432.40/x
  3. Step 3: Cross multiply
    28,902.80x = 43,368.60 × 16,432.40
  4. Step 4: Simplify right side
    28,902.80x = 712,650,182.64
  5. Step 5: Solve for x
    x = 712,650,182.64/28,902.80
  6. Step 6: Final answer
    x = 24,656.79

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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.