Home / 20,892.72-28,832.60-11,461.24

Finding the Fourth Proportional to 20,892.72, 28,832.60 and 11,461.24

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Solution

The fourth proportional to 20,892.72, 28,832.60 and 11,461.24 is: 15,816.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.72 : 28,832.60 = 11,461.24 : x
  2. Step 2: Convert to fraction form
    20,892.72/28,832.60 = 11,461.24/x
  3. Step 3: Cross multiply
    20,892.72x = 28,832.60 × 11,461.24
  4. Step 4: Simplify right side
    20,892.72x = 330,457,348.42
  5. Step 5: Solve for x
    x = 330,457,348.42/20,892.72
  6. Step 6: Final answer
    x = 15,816.87

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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.