Home / 20,391.26-30,588.71-7,910.98

Finding the Fourth Proportional to 20,391.26, 30,588.71 and 7,910.98

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Solution

The fourth proportional to 20,391.26, 30,588.71 and 7,910.98 is: 11,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.26 : 30,588.71 = 7,910.98 : x
  2. Step 2: Convert to fraction form
    20,391.26/30,588.71 = 7,910.98/x
  3. Step 3: Cross multiply
    20,391.26x = 30,588.71 × 7,910.98
  4. Step 4: Simplify right side
    20,391.26x = 241,986,557.01
  5. Step 5: Solve for x
    x = 241,986,557.01/20,391.26
  6. Step 6: Final answer
    x = 11,867.17

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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.