Home / 15,135.35-20,883.39-9,166.91

Finding the Fourth Proportional to 15,135.35, 20,883.39 and 9,166.91

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Solution

The fourth proportional to 15,135.35, 20,883.39 and 9,166.91 is: 12,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.35 : 20,883.39 = 9,166.91 : x
  2. Step 2: Convert to fraction form
    15,135.35/20,883.39 = 9,166.91/x
  3. Step 3: Cross multiply
    15,135.35x = 20,883.39 × 9,166.91
  4. Step 4: Simplify right side
    15,135.35x = 191,436,156.62
  5. Step 5: Solve for x
    x = 191,436,156.62/15,135.35
  6. Step 6: Final answer
    x = 12,648.28

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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.