Home / 20,153.25-27,811.96-11,201.13

Finding the Fourth Proportional to 20,153.25, 27,811.96 and 11,201.13

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Solution

The fourth proportional to 20,153.25, 27,811.96 and 11,201.13 is: 15,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.25 : 27,811.96 = 11,201.13 : x
  2. Step 2: Convert to fraction form
    20,153.25/27,811.96 = 11,201.13/x
  3. Step 3: Cross multiply
    20,153.25x = 27,811.96 × 11,201.13
  4. Step 4: Simplify right side
    20,153.25x = 311,525,351.51
  5. Step 5: Solve for x
    x = 311,525,351.51/20,153.25
  6. Step 6: Final answer
    x = 15,457.82

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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.