Home / 20,207.70-27,887.22-11,255.94

Finding the Fourth Proportional to 20,207.70, 27,887.22 and 11,255.94

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Solution

The fourth proportional to 20,207.70, 27,887.22 and 11,255.94 is: 15,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.70 : 27,887.22 = 11,255.94 : x
  2. Step 2: Convert to fraction form
    20,207.70/27,887.22 = 11,255.94/x
  3. Step 3: Cross multiply
    20,207.70x = 27,887.22 × 11,255.94
  4. Step 4: Simplify right side
    20,207.70x = 313,896,875.09
  5. Step 5: Solve for x
    x = 313,896,875.09/20,207.70
  6. Step 6: Final answer
    x = 15,533.53

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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.