Home / 18,710.40-28,049.09-7,626.36

Finding the Fourth Proportional to 18,710.40, 28,049.09 and 7,626.36

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Solution

The fourth proportional to 18,710.40, 28,049.09 and 7,626.36 is: 11,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.40 : 28,049.09 = 7,626.36 : x
  2. Step 2: Convert to fraction form
    18,710.40/28,049.09 = 7,626.36/x
  3. Step 3: Cross multiply
    18,710.40x = 28,049.09 × 7,626.36
  4. Step 4: Simplify right side
    18,710.40x = 213,912,406.96
  5. Step 5: Solve for x
    x = 213,912,406.96/18,710.40
  6. Step 6: Final answer
    x = 11,432.81

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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.