Home / 20,207.61-27,887.37-11,255.12

Finding the Fourth Proportional to 20,207.61, 27,887.37 and 11,255.12

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Solution

The fourth proportional to 20,207.61, 27,887.37 and 11,255.12 is: 15,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.61 : 27,887.37 = 11,255.12 : x
  2. Step 2: Convert to fraction form
    20,207.61/27,887.37 = 11,255.12/x
  3. Step 3: Cross multiply
    20,207.61x = 27,887.37 × 11,255.12
  4. Step 4: Simplify right side
    20,207.61x = 313,875,500.12
  5. Step 5: Solve for x
    x = 313,875,500.12/20,207.61
  6. Step 6: Final answer
    x = 15,532.54

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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.