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Finding the Fourth Proportional to 18,701.78, 25,808.48 and 10,743.46

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Solution

The fourth proportional to 18,701.78, 25,808.48 and 10,743.46 is: 14,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.78 : 25,808.48 = 10,743.46 : x
  2. Step 2: Convert to fraction form
    18,701.78/25,808.48 = 10,743.46/x
  3. Step 3: Cross multiply
    18,701.78x = 25,808.48 × 10,743.46
  4. Step 4: Simplify right side
    18,701.78x = 277,272,372.54
  5. Step 5: Solve for x
    x = 277,272,372.54/18,701.78
  6. Step 6: Final answer
    x = 14,825.99

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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.