Home / 18,227.72-25,157.43-11,511.20

Finding the Fourth Proportional to 18,227.72, 25,157.43 and 11,511.20

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Solution

The fourth proportional to 18,227.72, 25,157.43 and 11,511.20 is: 15,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.72 : 25,157.43 = 11,511.20 : x
  2. Step 2: Convert to fraction form
    18,227.72/25,157.43 = 11,511.20/x
  3. Step 3: Cross multiply
    18,227.72x = 25,157.43 × 11,511.20
  4. Step 4: Simplify right side
    18,227.72x = 289,592,082.43
  5. Step 5: Solve for x
    x = 289,592,082.43/18,227.72
  6. Step 6: Final answer
    x = 15,887.46

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Double scale
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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.