Home / 31,133.16-42,963.90-16,986.30

Finding the Fourth Proportional to 31,133.16, 42,963.90 and 16,986.30

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Solution

The fourth proportional to 31,133.16, 42,963.90 and 16,986.30 is: 23,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.16 : 42,963.90 = 16,986.30 : x
  2. Step 2: Convert to fraction form
    31,133.16/42,963.90 = 16,986.30/x
  3. Step 3: Cross multiply
    31,133.16x = 42,963.90 × 16,986.30
  4. Step 4: Simplify right side
    31,133.16x = 729,797,694.57
  5. Step 5: Solve for x
    x = 729,797,694.57/31,133.16
  6. Step 6: Final answer
    x = 23,441.17

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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.