Home / 30,809.45-42,517.45-17,380.66

Finding the Fourth Proportional to 30,809.45, 42,517.45 and 17,380.66

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Solution

The fourth proportional to 30,809.45, 42,517.45 and 17,380.66 is: 23,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.45 : 42,517.45 = 17,380.66 : x
  2. Step 2: Convert to fraction form
    30,809.45/42,517.45 = 17,380.66/x
  3. Step 3: Cross multiply
    30,809.45x = 42,517.45 × 17,380.66
  4. Step 4: Simplify right side
    30,809.45x = 738,981,192.77
  5. Step 5: Solve for x
    x = 738,981,192.77/30,809.45
  6. Step 6: Final answer
    x = 23,985.54

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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.