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Finding the Fourth Proportional to 18,954.65, 28,435.62 and 5,807.14

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Solution

The fourth proportional to 18,954.65, 28,435.62 and 5,807.14 is: 8,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.65 : 28,435.62 = 5,807.14 : x
  2. Step 2: Convert to fraction form
    18,954.65/28,435.62 = 5,807.14/x
  3. Step 3: Cross multiply
    18,954.65x = 28,435.62 × 5,807.14
  4. Step 4: Simplify right side
    18,954.65x = 165,129,626.33
  5. Step 5: Solve for x
    x = 165,129,626.33/18,954.65
  6. Step 6: Final answer
    x = 8,711.83

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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.