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Finding the Fourth Proportional to 21,998.08, 32,992.03 and 13,115.91

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Solution

The fourth proportional to 21,998.08, 32,992.03 and 13,115.91 is: 19,670.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.08 : 32,992.03 = 13,115.91 : x
  2. Step 2: Convert to fraction form
    21,998.08/32,992.03 = 13,115.91/x
  3. Step 3: Cross multiply
    21,998.08x = 32,992.03 × 13,115.91
  4. Step 4: Simplify right side
    21,998.08x = 432,720,376.96
  5. Step 5: Solve for x
    x = 432,720,376.96/21,998.08
  6. Step 6: Final answer
    x = 19,670.82

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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.