Home / 31,107.84-42,928.82-16,960.68

Finding the Fourth Proportional to 31,107.84, 42,928.82 and 16,960.68

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Solution

The fourth proportional to 31,107.84, 42,928.82 and 16,960.68 is: 23,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.84 : 42,928.82 = 16,960.68 : x
  2. Step 2: Convert to fraction form
    31,107.84/42,928.82 = 16,960.68/x
  3. Step 3: Cross multiply
    31,107.84x = 42,928.82 × 16,960.68
  4. Step 4: Simplify right side
    31,107.84x = 728,101,978.80
  5. Step 5: Solve for x
    x = 728,101,978.80/31,107.84
  6. Step 6: Final answer
    x = 23,405.74

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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.