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Finding the Fourth Proportional to 20,199.92, 30,231.03 and 18,447.08

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Solution

The fourth proportional to 20,199.92, 30,231.03 and 18,447.08 is: 27,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.92 : 30,231.03 = 18,447.08 : x
  2. Step 2: Convert to fraction form
    20,199.92/30,231.03 = 18,447.08/x
  3. Step 3: Cross multiply
    20,199.92x = 30,231.03 × 18,447.08
  4. Step 4: Simplify right side
    20,199.92x = 557,674,228.89
  5. Step 5: Solve for x
    x = 557,674,228.89/20,199.92
  6. Step 6: Final answer
    x = 27,607.74

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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.