Home / 30,780.72-42,474.85-17,355.26

Finding the Fourth Proportional to 30,780.72, 42,474.85 and 17,355.26

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Solution

The fourth proportional to 30,780.72, 42,474.85 and 17,355.26 is: 23,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,780.72 : 42,474.85 = 17,355.26 : x
  2. Step 2: Convert to fraction form
    30,780.72/42,474.85 = 17,355.26/x
  3. Step 3: Cross multiply
    30,780.72x = 42,474.85 × 17,355.26
  4. Step 4: Simplify right side
    30,780.72x = 737,162,128.01
  5. Step 5: Solve for x
    x = 737,162,128.01/30,780.72
  6. Step 6: Final answer
    x = 23,948.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.