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Finding the Fourth Proportional to 18,644.52, 25,729.07 and 10,146.51

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Solution

The fourth proportional to 18,644.52, 25,729.07 and 10,146.51 is: 14,001.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.52 : 25,729.07 = 10,146.51 : x
  2. Step 2: Convert to fraction form
    18,644.52/25,729.07 = 10,146.51/x
  3. Step 3: Cross multiply
    18,644.52x = 25,729.07 × 10,146.51
  4. Step 4: Simplify right side
    18,644.52x = 261,060,266.05
  5. Step 5: Solve for x
    x = 261,060,266.05/18,644.52
  6. Step 6: Final answer
    x = 14,001.98

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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.