Home / 20,910.01-28,855.74-11,349.90

Finding the Fourth Proportional to 20,910.01, 28,855.74 and 11,349.90

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Solution

The fourth proportional to 20,910.01, 28,855.74 and 11,349.90 is: 15,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.01 : 28,855.74 = 11,349.90 : x
  2. Step 2: Convert to fraction form
    20,910.01/28,855.74 = 11,349.90/x
  3. Step 3: Cross multiply
    20,910.01x = 28,855.74 × 11,349.90
  4. Step 4: Simplify right side
    20,910.01x = 327,509,763.43
  5. Step 5: Solve for x
    x = 327,509,763.43/20,910.01
  6. Step 6: Final answer
    x = 15,662.82

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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.