Home / 30,990.62-42,766.89-17,564.41

Finding the Fourth Proportional to 30,990.62, 42,766.89 and 17,564.41

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Solution

The fourth proportional to 30,990.62, 42,766.89 and 17,564.41 is: 24,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.62 : 42,766.89 = 17,564.41 : x
  2. Step 2: Convert to fraction form
    30,990.62/42,766.89 = 17,564.41/x
  3. Step 3: Cross multiply
    30,990.62x = 42,766.89 × 17,564.41
  4. Step 4: Simplify right side
    30,990.62x = 751,175,177.98
  5. Step 5: Solve for x
    x = 751,175,177.98/30,990.62
  6. Step 6: Final answer
    x = 24,238.79

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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.