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Finding the Fourth Proportional to 18,833.44, 28,231.78 and 8,970.08

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Solution

The fourth proportional to 18,833.44, 28,231.78 and 8,970.08 is: 13,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.44 : 28,231.78 = 8,970.08 : x
  2. Step 2: Convert to fraction form
    18,833.44/28,231.78 = 8,970.08/x
  3. Step 3: Cross multiply
    18,833.44x = 28,231.78 × 8,970.08
  4. Step 4: Simplify right side
    18,833.44x = 253,241,325.14
  5. Step 5: Solve for x
    x = 253,241,325.14/18,833.44
  6. Step 6: Final answer
    x = 13,446.37

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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.