Home / 30,986.03-42,759.79-16,838.90

Finding the Fourth Proportional to 30,986.03, 42,759.79 and 16,838.90

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Solution

The fourth proportional to 30,986.03, 42,759.79 and 16,838.90 is: 23,237.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.03 : 42,759.79 = 16,838.90 : x
  2. Step 2: Convert to fraction form
    30,986.03/42,759.79 = 16,838.90/x
  3. Step 3: Cross multiply
    30,986.03x = 42,759.79 × 16,838.90
  4. Step 4: Simplify right side
    30,986.03x = 720,027,571.93
  5. Step 5: Solve for x
    x = 720,027,571.93/30,986.03
  6. Step 6: Final answer
    x = 23,237.17

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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.