Home / 15,165.11-20,928.36-8,450.58

Finding the Fourth Proportional to 15,165.11, 20,928.36 and 8,450.58

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Solution

The fourth proportional to 15,165.11, 20,928.36 and 8,450.58 is: 11,662.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.11 : 20,928.36 = 8,450.58 : x
  2. Step 2: Convert to fraction form
    15,165.11/20,928.36 = 8,450.58/x
  3. Step 3: Cross multiply
    15,165.11x = 20,928.36 × 8,450.58
  4. Step 4: Simplify right side
    15,165.11x = 176,856,780.45
  5. Step 5: Solve for x
    x = 176,856,780.45/15,165.11
  6. Step 6: Final answer
    x = 11,662.09

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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.