Home / 30,659.99-42,310.60-17,231.12

Finding the Fourth Proportional to 30,659.99, 42,310.60 and 17,231.12

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Solution

The fourth proportional to 30,659.99, 42,310.60 and 17,231.12 is: 23,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,659.99 : 42,310.60 = 17,231.12 : x
  2. Step 2: Convert to fraction form
    30,659.99/42,310.60 = 17,231.12/x
  3. Step 3: Cross multiply
    30,659.99x = 42,310.60 × 17,231.12
  4. Step 4: Simplify right side
    30,659.99x = 729,059,088.57
  5. Step 5: Solve for x
    x = 729,059,088.57/30,659.99
  6. Step 6: Final answer
    x = 23,778.85

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1.5x scale

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.