Home / 18,739.88-25,860.90-10,781.96

Finding the Fourth Proportional to 18,739.88, 25,860.90 and 10,781.96

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Solution

The fourth proportional to 18,739.88, 25,860.90 and 10,781.96 is: 14,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.88 : 25,860.90 = 10,781.96 : x
  2. Step 2: Convert to fraction form
    18,739.88/25,860.90 = 10,781.96/x
  3. Step 3: Cross multiply
    18,739.88x = 25,860.90 × 10,781.96
  4. Step 4: Simplify right side
    18,739.88x = 278,831,189.36
  5. Step 5: Solve for x
    x = 278,831,189.36/18,739.88
  6. Step 6: Final answer
    x = 14,879.03

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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.