Home / 31,140.94-42,975.41-16,994.70

Finding the Fourth Proportional to 31,140.94, 42,975.41 and 16,994.70

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Solution

The fourth proportional to 31,140.94, 42,975.41 and 16,994.70 is: 23,453.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.94 : 42,975.41 = 16,994.70 : x
  2. Step 2: Convert to fraction form
    31,140.94/42,975.41 = 16,994.70/x
  3. Step 3: Cross multiply
    31,140.94x = 42,975.41 × 16,994.70
  4. Step 4: Simplify right side
    31,140.94x = 730,354,200.33
  5. Step 5: Solve for x
    x = 730,354,200.33/31,140.94
  6. Step 6: Final answer
    x = 23,453.18

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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.