Home / 20,105.55-27,727.49-12,552.57

Finding the Fourth Proportional to 20,105.55, 27,727.49 and 12,552.57

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Solution

The fourth proportional to 20,105.55, 27,727.49 and 12,552.57 is: 17,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.55 : 27,727.49 = 12,552.57 : x
  2. Step 2: Convert to fraction form
    20,105.55/27,727.49 = 12,552.57/x
  3. Step 3: Cross multiply
    20,105.55x = 27,727.49 × 12,552.57
  4. Step 4: Simplify right side
    20,105.55x = 348,051,259.15
  5. Step 5: Solve for x
    x = 348,051,259.15/20,105.55
  6. Step 6: Final answer
    x = 17,311.20

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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.