Home / 15,878.44-21,910.67-9,166.23

Finding the Fourth Proportional to 15,878.44, 21,910.67 and 9,166.23

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Solution

The fourth proportional to 15,878.44, 21,910.67 and 9,166.23 is: 12,648.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,878.44 : 21,910.67 = 9,166.23 : x
  2. Step 2: Convert to fraction form
    15,878.44/21,910.67 = 9,166.23/x
  3. Step 3: Cross multiply
    15,878.44x = 21,910.67 × 9,166.23
  4. Step 4: Simplify right side
    15,878.44x = 200,838,229.22
  5. Step 5: Solve for x
    x = 200,838,229.22/15,878.44
  6. Step 6: Final answer
    x = 12,648.49

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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.