Home / 15,391.71-21,238.67-8,584.14

Finding the Fourth Proportional to 15,391.71, 21,238.67 and 8,584.14

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Solution

The fourth proportional to 15,391.71, 21,238.67 and 8,584.14 is: 11,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.71 : 21,238.67 = 8,584.14 : x
  2. Step 2: Convert to fraction form
    15,391.71/21,238.67 = 8,584.14/x
  3. Step 3: Cross multiply
    15,391.71x = 21,238.67 × 8,584.14
  4. Step 4: Simplify right side
    15,391.71x = 182,315,716.69
  5. Step 5: Solve for x
    x = 182,315,716.69/15,391.71
  6. Step 6: Final answer
    x = 11,845.06

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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.