Home / 31,107.20-42,928.36-16,960.24

Finding the Fourth Proportional to 31,107.20, 42,928.36 and 16,960.24

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Solution

The fourth proportional to 31,107.20, 42,928.36 and 16,960.24 is: 23,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.20 : 42,928.36 = 16,960.24 : x
  2. Step 2: Convert to fraction form
    31,107.20/42,928.36 = 16,960.24/x
  3. Step 3: Cross multiply
    31,107.20x = 42,928.36 × 16,960.24
  4. Step 4: Simplify right side
    31,107.20x = 728,075,288.41
  5. Step 5: Solve for x
    x = 728,075,288.41/31,107.20
  6. Step 6: Final answer
    x = 23,405.36

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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.