Home / 30,990.19-42,766.47-16,843.04

Finding the Fourth Proportional to 30,990.19, 42,766.47 and 16,843.04

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Solution

The fourth proportional to 30,990.19, 42,766.47 and 16,843.04 is: 23,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.19 : 42,766.47 = 16,843.04 : x
  2. Step 2: Convert to fraction form
    30,990.19/42,766.47 = 16,843.04/x
  3. Step 3: Cross multiply
    30,990.19x = 42,766.47 × 16,843.04
  4. Step 4: Simplify right side
    30,990.19x = 720,317,108.93
  5. Step 5: Solve for x
    x = 720,317,108.93/30,990.19
  6. Step 6: Final answer
    x = 23,243.39

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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.