Home / 31,133.44-42,964.14-16,986.34

Finding the Fourth Proportional to 31,133.44, 42,964.14 and 16,986.34

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Solution

The fourth proportional to 31,133.44, 42,964.14 and 16,986.34 is: 23,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.44 : 42,964.14 = 16,986.34 : x
  2. Step 2: Convert to fraction form
    31,133.44/42,964.14 = 16,986.34/x
  3. Step 3: Cross multiply
    31,133.44x = 42,964.14 × 16,986.34
  4. Step 4: Simplify right side
    31,133.44x = 729,803,489.85
  5. Step 5: Solve for x
    x = 729,803,489.85/31,133.44
  6. Step 6: Final answer
    x = 23,441.15

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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.