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Finding the Fourth Proportional to 21,998.64, 32,997.68 and 5,358.96

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Solution

The fourth proportional to 21,998.64, 32,997.68 and 5,358.96 is: 8,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.64 : 32,997.68 = 5,358.96 : x
  2. Step 2: Convert to fraction form
    21,998.64/32,997.68 = 5,358.96/x
  3. Step 3: Cross multiply
    21,998.64x = 32,997.68 × 5,358.96
  4. Step 4: Simplify right side
    21,998.64x = 176,833,247.21
  5. Step 5: Solve for x
    x = 176,833,247.21/21,998.64
  6. Step 6: Final answer
    x = 8,038.37

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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.