Home / 30,986.20-42,760.98-16,839.16

Finding the Fourth Proportional to 30,986.20, 42,760.98 and 16,839.16

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Solution

The fourth proportional to 30,986.20, 42,760.98 and 16,839.16 is: 23,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.20 : 42,760.98 = 16,839.16 : x
  2. Step 2: Convert to fraction form
    30,986.20/42,760.98 = 16,839.16/x
  3. Step 3: Cross multiply
    30,986.20x = 42,760.98 × 16,839.16
  4. Step 4: Simplify right side
    30,986.20x = 720,058,983.98
  5. Step 5: Solve for x
    x = 720,058,983.98/30,986.20
  6. Step 6: Final answer
    x = 23,238.05

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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.