Home / 20,053.28-27,640.40-15,076.64

Finding the Fourth Proportional to 20,053.28, 27,640.40 and 15,076.64

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Solution

The fourth proportional to 20,053.28, 27,640.40 and 15,076.64 is: 20,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.28 : 27,640.40 = 15,076.64 : x
  2. Step 2: Convert to fraction form
    20,053.28/27,640.40 = 15,076.64/x
  3. Step 3: Cross multiply
    20,053.28x = 27,640.40 × 15,076.64
  4. Step 4: Simplify right side
    20,053.28x = 416,724,360.26
  5. Step 5: Solve for x
    x = 416,724,360.26/20,053.28
  6. Step 6: Final answer
    x = 20,780.86

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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.