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Finding the Fourth Proportional to 18,705.28, 25,814.28 and 10,748.02

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Solution

The fourth proportional to 18,705.28, 25,814.28 and 10,748.02 is: 14,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.28 : 25,814.28 = 10,748.02 : x
  2. Step 2: Convert to fraction form
    18,705.28/25,814.28 = 10,748.02/x
  3. Step 3: Cross multiply
    18,705.28x = 25,814.28 × 10,748.02
  4. Step 4: Simplify right side
    18,705.28x = 277,452,397.73
  5. Step 5: Solve for x
    x = 277,452,397.73/18,705.28
  6. Step 6: Final answer
    x = 14,832.84

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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.