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Finding the Fourth Proportional to 28,910.80, 43,265.40 and 17,232.40

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Solution

The fourth proportional to 28,910.80, 43,265.40 and 17,232.40 is: 25,788.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.80 : 43,265.40 = 17,232.40 : x
  2. Step 2: Convert to fraction form
    28,910.80/43,265.40 = 17,232.40/x
  3. Step 3: Cross multiply
    28,910.80x = 43,265.40 × 17,232.40
  4. Step 4: Simplify right side
    28,910.80x = 745,566,678.96
  5. Step 5: Solve for x
    x = 745,566,678.96/28,910.80
  6. Step 6: Final answer
    x = 25,788.52

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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.