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Finding the Fourth Proportional to 18,801.22, 25,945.69 and 11,247.87

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Solution

The fourth proportional to 18,801.22, 25,945.69 and 11,247.87 is: 15,522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.22 : 25,945.69 = 11,247.87 : x
  2. Step 2: Convert to fraction form
    18,801.22/25,945.69 = 11,247.87/x
  3. Step 3: Cross multiply
    18,801.22x = 25,945.69 × 11,247.87
  4. Step 4: Simplify right side
    18,801.22x = 291,833,748.18
  5. Step 5: Solve for x
    x = 291,833,748.18/18,801.22
  6. Step 6: Final answer
    x = 15,522.06

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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.