Home / 17,639.28-26,453.40-7,786.80

Finding the Fourth Proportional to 17,639.28, 26,453.40 and 7,786.80

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Solution

The fourth proportional to 17,639.28, 26,453.40 and 7,786.80 is: 11,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,639.28 : 26,453.40 = 7,786.80 : x
  2. Step 2: Convert to fraction form
    17,639.28/26,453.40 = 7,786.80/x
  3. Step 3: Cross multiply
    17,639.28x = 26,453.40 × 7,786.80
  4. Step 4: Simplify right side
    17,639.28x = 205,987,335.12
  5. Step 5: Solve for x
    x = 205,987,335.12/17,639.28
  6. Step 6: Final answer
    x = 11,677.76

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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.