Home / 31,107.48-42,928.60-16,960.60

Finding the Fourth Proportional to 31,107.48, 42,928.60 and 16,960.60

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Solution

The fourth proportional to 31,107.48, 42,928.60 and 16,960.60 is: 23,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.48 : 42,928.60 = 16,960.60 : x
  2. Step 2: Convert to fraction form
    31,107.48/42,928.60 = 16,960.60/x
  3. Step 3: Cross multiply
    31,107.48x = 42,928.60 × 16,960.60
  4. Step 4: Simplify right side
    31,107.48x = 728,094,813.16
  5. Step 5: Solve for x
    x = 728,094,813.16/31,107.48
  6. Step 6: Final answer
    x = 23,405.78

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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.