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Finding the Fourth Proportional to 18,432.03, 27,645 and 7,903.75

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Solution

The fourth proportional to 18,432.03, 27,645 and 7,903.75 is: 11,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.03 : 27,645 = 7,903.75 : x
  2. Step 2: Convert to fraction form
    18,432.03/27,645 = 7,903.75/x
  3. Step 3: Cross multiply
    18,432.03x = 27,645 × 7,903.75
  4. Step 4: Simplify right side
    18,432.03x = 218,499,099.64
  5. Step 5: Solve for x
    x = 218,499,099.64/18,432.03
  6. Step 6: Final answer
    x = 11,854.32

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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.