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Finding the Fourth Proportional to 18,603.35, 25,672.20 and 10,105.29

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Solution

The fourth proportional to 18,603.35, 25,672.20 and 10,105.29 is: 13,945.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.35 : 25,672.20 = 10,105.29 : x
  2. Step 2: Convert to fraction form
    18,603.35/25,672.20 = 10,105.29/x
  3. Step 3: Cross multiply
    18,603.35x = 25,672.20 × 10,105.29
  4. Step 4: Simplify right side
    18,603.35x = 259,424,888.07
  5. Step 5: Solve for x
    x = 259,424,888.07/18,603.35
  6. Step 6: Final answer
    x = 13,945.06

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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.