Home / 18,781.56-25,918.62-10,398.06

Finding the Fourth Proportional to 18,781.56, 25,918.62 and 10,398.06

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Solution

The fourth proportional to 18,781.56, 25,918.62 and 10,398.06 is: 14,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.56 : 25,918.62 = 10,398.06 : x
  2. Step 2: Convert to fraction form
    18,781.56/25,918.62 = 10,398.06/x
  3. Step 3: Cross multiply
    18,781.56x = 25,918.62 × 10,398.06
  4. Step 4: Simplify right side
    18,781.56x = 269,503,365.88
  5. Step 5: Solve for x
    x = 269,503,365.88/18,781.56
  6. Step 6: Final answer
    x = 14,349.36

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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.