Home / 20,091.73-27,725.28-11,138.93

Finding the Fourth Proportional to 20,091.73, 27,725.28 and 11,138.93

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Solution

The fourth proportional to 20,091.73, 27,725.28 and 11,138.93 is: 15,371.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.73 : 27,725.28 = 11,138.93 : x
  2. Step 2: Convert to fraction form
    20,091.73/27,725.28 = 11,138.93/x
  3. Step 3: Cross multiply
    20,091.73x = 27,725.28 × 11,138.93
  4. Step 4: Simplify right side
    20,091.73x = 308,829,953.15
  5. Step 5: Solve for x
    x = 308,829,953.15/20,091.73
  6. Step 6: Final answer
    x = 15,371.00

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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.