Home / 20,137.13-27,767.57-12,580.70

Finding the Fourth Proportional to 20,137.13, 27,767.57 and 12,580.70

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Solution

The fourth proportional to 20,137.13, 27,767.57 and 12,580.70 is: 17,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.13 : 27,767.57 = 12,580.70 : x
  2. Step 2: Convert to fraction form
    20,137.13/27,767.57 = 12,580.70/x
  3. Step 3: Cross multiply
    20,137.13x = 27,767.57 × 12,580.70
  4. Step 4: Simplify right side
    20,137.13x = 349,335,452.24
  5. Step 5: Solve for x
    x = 349,335,452.24/20,137.13
  6. Step 6: Final answer
    x = 17,347.83

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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.