Home / 18,682.88-25,781.07-10,507.70

Finding the Fourth Proportional to 18,682.88, 25,781.07 and 10,507.70

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Solution

The fourth proportional to 18,682.88, 25,781.07 and 10,507.70 is: 14,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.88 : 25,781.07 = 10,507.70 : x
  2. Step 2: Convert to fraction form
    18,682.88/25,781.07 = 10,507.70/x
  3. Step 3: Cross multiply
    18,682.88x = 25,781.07 × 10,507.70
  4. Step 4: Simplify right side
    18,682.88x = 270,899,853.10
  5. Step 5: Solve for x
    x = 270,899,853.10/18,682.88
  6. Step 6: Final answer
    x = 14,499.90

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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.