Home / 12,928.27-19,376.00-6,687.12

Finding the Fourth Proportional to 12,928.27, 19,376.00 and 6,687.12

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Solution

The fourth proportional to 12,928.27, 19,376.00 and 6,687.12 is: 10,022.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.27 : 19,376.00 = 6,687.12 : x
  2. Step 2: Convert to fraction form
    12,928.27/19,376.00 = 6,687.12/x
  3. Step 3: Cross multiply
    12,928.27x = 19,376.00 × 6,687.12
  4. Step 4: Simplify right side
    12,928.27x = 129,569,506.80
  5. Step 5: Solve for x
    x = 129,569,506.80/12,928.27
  6. Step 6: Final answer
    x = 10,022.18

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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.