Home / 30,968.82-42,737.19-16,821.66

Finding the Fourth Proportional to 30,968.82, 42,737.19 and 16,821.66

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Solution

The fourth proportional to 30,968.82, 42,737.19 and 16,821.66 is: 23,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.82 : 42,737.19 = 16,821.66 : x
  2. Step 2: Convert to fraction form
    30,968.82/42,737.19 = 16,821.66/x
  3. Step 3: Cross multiply
    30,968.82x = 42,737.19 × 16,821.66
  4. Step 4: Simplify right side
    30,968.82x = 718,910,479.54
  5. Step 5: Solve for x
    x = 718,910,479.54/30,968.82
  6. Step 6: Final answer
    x = 23,214.01

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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.