Home / 30,911.20-42,656.95-17,481.95

Finding the Fourth Proportional to 30,911.20, 42,656.95 and 17,481.95

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Solution

The fourth proportional to 30,911.20, 42,656.95 and 17,481.95 is: 24,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.20 : 42,656.95 = 17,481.95 : x
  2. Step 2: Convert to fraction form
    30,911.20/42,656.95 = 17,481.95/x
  3. Step 3: Cross multiply
    30,911.20x = 42,656.95 × 17,481.95
  4. Step 4: Simplify right side
    30,911.20x = 745,726,667.05
  5. Step 5: Solve for x
    x = 745,726,667.05/30,911.20
  6. Step 6: Final answer
    x = 24,124.80

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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.