Home / 20,292.26-28,001.58-11,678.72

Finding the Fourth Proportional to 20,292.26, 28,001.58 and 11,678.72

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Solution

The fourth proportional to 20,292.26, 28,001.58 and 11,678.72 is: 16,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.26 : 28,001.58 = 11,678.72 : x
  2. Step 2: Convert to fraction form
    20,292.26/28,001.58 = 11,678.72/x
  3. Step 3: Cross multiply
    20,292.26x = 28,001.58 × 11,678.72
  4. Step 4: Simplify right side
    20,292.26x = 327,022,612.38
  5. Step 5: Solve for x
    x = 327,022,612.38/20,292.26
  6. Step 6: Final answer
    x = 16,115.63

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Half scale
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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.