Home / 20,131.62-27,781.83-11,746.50

Finding the Fourth Proportional to 20,131.62, 27,781.83 and 11,746.50

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Solution

The fourth proportional to 20,131.62, 27,781.83 and 11,746.50 is: 16,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.62 : 27,781.83 = 11,746.50 : x
  2. Step 2: Convert to fraction form
    20,131.62/27,781.83 = 11,746.50/x
  3. Step 3: Cross multiply
    20,131.62x = 27,781.83 × 11,746.50
  4. Step 4: Simplify right side
    20,131.62x = 326,339,266.10
  5. Step 5: Solve for x
    x = 326,339,266.10/20,131.62
  6. Step 6: Final answer
    x = 16,210.28

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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.