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Finding the Fourth Proportional to 21,903.91, 32,836.91 and 18,593.78

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Solution

The fourth proportional to 21,903.91, 32,836.91 and 18,593.78 is: 27,874.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.91 : 32,836.91 = 18,593.78 : x
  2. Step 2: Convert to fraction form
    21,903.91/32,836.91 = 18,593.78/x
  3. Step 3: Cross multiply
    21,903.91x = 32,836.91 × 18,593.78
  4. Step 4: Simplify right side
    21,903.91x = 610,562,339.27
  5. Step 5: Solve for x
    x = 610,562,339.27/21,903.91
  6. Step 6: Final answer
    x = 27,874.59

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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.