Home / 31,121.40-42,948.56-16,975.02

Finding the Fourth Proportional to 31,121.40, 42,948.56 and 16,975.02

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Solution

The fourth proportional to 31,121.40, 42,948.56 and 16,975.02 is: 23,426.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.40 : 42,948.56 = 16,975.02 : x
  2. Step 2: Convert to fraction form
    31,121.40/42,948.56 = 16,975.02/x
  3. Step 3: Cross multiply
    31,121.40x = 42,948.56 × 16,975.02
  4. Step 4: Simplify right side
    31,121.40x = 729,052,664.97
  5. Step 5: Solve for x
    x = 729,052,664.97/31,121.40
  6. Step 6: Final answer
    x = 23,426.09

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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.