Home / 20,113.51-27,755.31-11,160.45

Finding the Fourth Proportional to 20,113.51, 27,755.31 and 11,160.45

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Solution

The fourth proportional to 20,113.51, 27,755.31 and 11,160.45 is: 15,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.51 : 27,755.31 = 11,160.45 : x
  2. Step 2: Convert to fraction form
    20,113.51/27,755.31 = 11,160.45/x
  3. Step 3: Cross multiply
    20,113.51x = 27,755.31 × 11,160.45
  4. Step 4: Simplify right side
    20,113.51x = 309,761,749.49
  5. Step 5: Solve for x
    x = 309,761,749.49/20,113.51
  6. Step 6: Final answer
    x = 15,400.68

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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.