Home / 20,892.96-28,832.20-11,462.12

Finding the Fourth Proportional to 20,892.96, 28,832.20 and 11,462.12

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Solution

The fourth proportional to 20,892.96, 28,832.20 and 11,462.12 is: 15,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.96 : 28,832.20 = 11,462.12 : x
  2. Step 2: Convert to fraction form
    20,892.96/28,832.20 = 11,462.12/x
  3. Step 3: Cross multiply
    20,892.96x = 28,832.20 × 11,462.12
  4. Step 4: Simplify right side
    20,892.96x = 330,478,136.26
  5. Step 5: Solve for x
    x = 330,478,136.26/20,892.96
  6. Step 6: Final answer
    x = 15,817.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.