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Finding the Fourth Proportional to 18,963.62, 28,448.40 and 5,814.62

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Solution

The fourth proportional to 18,963.62, 28,448.40 and 5,814.62 is: 8,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.62 : 28,448.40 = 5,814.62 : x
  2. Step 2: Convert to fraction form
    18,963.62/28,448.40 = 5,814.62/x
  3. Step 3: Cross multiply
    18,963.62x = 28,448.40 × 5,814.62
  4. Step 4: Simplify right side
    18,963.62x = 165,416,635.61
  5. Step 5: Solve for x
    x = 165,416,635.61/18,963.62
  6. Step 6: Final answer
    x = 8,722.84

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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.