Home / 31,133.64-42,964.58-16,986.80

Finding the Fourth Proportional to 31,133.64, 42,964.58 and 16,986.80

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Solution

The fourth proportional to 31,133.64, 42,964.58 and 16,986.80 is: 23,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.64 : 42,964.58 = 16,986.80 : x
  2. Step 2: Convert to fraction form
    31,133.64/42,964.58 = 16,986.80/x
  3. Step 3: Cross multiply
    31,133.64x = 42,964.58 × 16,986.80
  4. Step 4: Simplify right side
    31,133.64x = 729,830,727.54
  5. Step 5: Solve for x
    x = 729,830,727.54/31,133.64
  6. Step 6: Final answer
    x = 23,441.87

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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.