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Finding the Fourth Proportional to 21,992.96, 32,946.91 and 13,676.29

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Solution

The fourth proportional to 21,992.96, 32,946.91 and 13,676.29 is: 20,487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.96 : 32,946.91 = 13,676.29 : x
  2. Step 2: Convert to fraction form
    21,992.96/32,946.91 = 13,676.29/x
  3. Step 3: Cross multiply
    21,992.96x = 32,946.91 × 13,676.29
  4. Step 4: Simplify right side
    21,992.96x = 450,591,495.76
  5. Step 5: Solve for x
    x = 450,591,495.76/21,992.96
  6. Step 6: Final answer
    x = 20,487.99

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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.