Home / 20,207.67-27,887.45-11,255.18

Finding the Fourth Proportional to 20,207.67, 27,887.45 and 11,255.18

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Solution

The fourth proportional to 20,207.67, 27,887.45 and 11,255.18 is: 15,532.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.67 : 27,887.45 = 11,255.18 : x
  2. Step 2: Convert to fraction form
    20,207.67/27,887.45 = 11,255.18/x
  3. Step 3: Cross multiply
    20,207.67x = 27,887.45 × 11,255.18
  4. Step 4: Simplify right side
    20,207.67x = 313,878,130.05
  5. Step 5: Solve for x
    x = 313,878,130.05/20,207.67
  6. Step 6: Final answer
    x = 15,532.62

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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.