Home / 18,727.14-28,107.72-9,969.42

Finding the Fourth Proportional to 18,727.14, 28,107.72 and 9,969.42

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Solution

The fourth proportional to 18,727.14, 28,107.72 and 9,969.42 is: 14,963.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.14 : 28,107.72 = 9,969.42 : x
  2. Step 2: Convert to fraction form
    18,727.14/28,107.72 = 9,969.42/x
  3. Step 3: Cross multiply
    18,727.14x = 28,107.72 × 9,969.42
  4. Step 4: Simplify right side
    18,727.14x = 280,217,665.92
  5. Step 5: Solve for x
    x = 280,217,665.92/18,727.14
  6. Step 6: Final answer
    x = 14,963.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.