Home / 26,186.40-39,213.99-20,669.70

Finding the Fourth Proportional to 26,186.40, 39,213.99 and 20,669.70

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Solution

The fourth proportional to 26,186.40, 39,213.99 and 20,669.70 is: 30,952.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,186.40 : 39,213.99 = 20,669.70 : x
  2. Step 2: Convert to fraction form
    26,186.40/39,213.99 = 20,669.70/x
  3. Step 3: Cross multiply
    26,186.40x = 39,213.99 × 20,669.70
  4. Step 4: Simplify right side
    26,186.40x = 810,541,409.10
  5. Step 5: Solve for x
    x = 810,541,409.10/26,186.40
  6. Step 6: Final answer
    x = 30,952.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.