Home / 15,418.58-21,259.89-11,391.23

Finding the Fourth Proportional to 15,418.58, 21,259.89 and 11,391.23

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Solution

The fourth proportional to 15,418.58, 21,259.89 and 11,391.23 is: 15,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.58 : 21,259.89 = 11,391.23 : x
  2. Step 2: Convert to fraction form
    15,418.58/21,259.89 = 11,391.23/x
  3. Step 3: Cross multiply
    15,418.58x = 21,259.89 × 11,391.23
  4. Step 4: Simplify right side
    15,418.58x = 242,176,190.47
  5. Step 5: Solve for x
    x = 242,176,190.47/15,418.58
  6. Step 6: Final answer
    x = 15,706.78

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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.