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Finding the Fourth Proportional to 18,873.72, 28,308.18 and 6,393.24

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Solution

The fourth proportional to 18,873.72, 28,308.18 and 6,393.24 is: 9,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.72 : 28,308.18 = 6,393.24 : x
  2. Step 2: Convert to fraction form
    18,873.72/28,308.18 = 6,393.24/x
  3. Step 3: Cross multiply
    18,873.72x = 28,308.18 × 6,393.24
  4. Step 4: Simplify right side
    18,873.72x = 180,980,988.70
  5. Step 5: Solve for x
    x = 180,980,988.70/18,873.72
  6. Step 6: Final answer
    x = 9,589.05

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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.