Home / 30,986.92-42,761.68-16,839.48

Finding the Fourth Proportional to 30,986.92, 42,761.68 and 16,839.48

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Solution

The fourth proportional to 30,986.92, 42,761.68 and 16,839.48 is: 23,238.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.92 : 42,761.68 = 16,839.48 : x
  2. Step 2: Convert to fraction form
    30,986.92/42,761.68 = 16,839.48/x
  3. Step 3: Cross multiply
    30,986.92x = 42,761.68 × 16,839.48
  4. Step 4: Simplify right side
    30,986.92x = 720,084,455.13
  5. Step 5: Solve for x
    x = 720,084,455.13/30,986.92
  6. Step 6: Final answer
    x = 23,238.34

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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.