Home / 31,133.61-42,964.32-16,986.45

Finding the Fourth Proportional to 31,133.61, 42,964.32 and 16,986.45

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Solution

The fourth proportional to 31,133.61, 42,964.32 and 16,986.45 is: 23,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,133.61 : 42,964.32 = 16,986.45 : x
  2. Step 2: Convert to fraction form
    31,133.61/42,964.32 = 16,986.45/x
  3. Step 3: Cross multiply
    31,133.61x = 42,964.32 × 16,986.45
  4. Step 4: Simplify right side
    31,133.61x = 729,811,273.46
  5. Step 5: Solve for x
    x = 729,811,273.46/31,133.61
  6. Step 6: Final answer
    x = 23,441.27

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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.