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Finding the Fourth Proportional to 18,855.66, 28,276.20 and 6,372.36

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Solution

The fourth proportional to 18,855.66, 28,276.20 and 6,372.36 is: 9,556.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.66 : 28,276.20 = 6,372.36 : x
  2. Step 2: Convert to fraction form
    18,855.66/28,276.20 = 6,372.36/x
  3. Step 3: Cross multiply
    18,855.66x = 28,276.20 × 6,372.36
  4. Step 4: Simplify right side
    18,855.66x = 180,186,125.83
  5. Step 5: Solve for x
    x = 180,186,125.83/18,855.66
  6. Step 6: Final answer
    x = 9,556.08

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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.