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Finding the Fourth Proportional to 18,820.06, 25,972.04 and 11,266.72

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Solution

The fourth proportional to 18,820.06, 25,972.04 and 11,266.72 is: 15,548.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.06 : 25,972.04 = 11,266.72 : x
  2. Step 2: Convert to fraction form
    18,820.06/25,972.04 = 11,266.72/x
  3. Step 3: Cross multiply
    18,820.06x = 25,972.04 × 11,266.72
  4. Step 4: Simplify right side
    18,820.06x = 292,619,665.75
  5. Step 5: Solve for x
    x = 292,619,665.75/18,820.06
  6. Step 6: Final answer
    x = 15,548.29

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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.