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Finding the Fourth Proportional to 18,855.27, 28,271.28 and 6,374.12

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Solution

The fourth proportional to 18,855.27, 28,271.28 and 6,374.12 is: 9,557.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.27 : 28,271.28 = 6,374.12 : x
  2. Step 2: Convert to fraction form
    18,855.27/28,271.28 = 6,374.12/x
  3. Step 3: Cross multiply
    18,855.27x = 28,271.28 × 6,374.12
  4. Step 4: Simplify right side
    18,855.27x = 180,204,389.92
  5. Step 5: Solve for x
    x = 180,204,389.92/18,855.27
  6. Step 6: Final answer
    x = 9,557.24

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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.