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Finding the Fourth Proportional to 19,238.20, 28,870.20 and 6,758.20

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Solution

The fourth proportional to 19,238.20, 28,870.20 and 6,758.20 is: 10,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.20 : 28,870.20 = 6,758.20 : x
  2. Step 2: Convert to fraction form
    19,238.20/28,870.20 = 6,758.20/x
  3. Step 3: Cross multiply
    19,238.20x = 28,870.20 × 6,758.20
  4. Step 4: Simplify right side
    19,238.20x = 195,110,585.64
  5. Step 5: Solve for x
    x = 195,110,585.64/19,238.20
  6. Step 6: Final answer
    x = 10,141.83

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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.