Home / 27,228.78-37,575.09-15,128.60

Finding the Fourth Proportional to 27,228.78, 37,575.09 and 15,128.60

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Solution

The fourth proportional to 27,228.78, 37,575.09 and 15,128.60 is: 20,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,228.78 : 37,575.09 = 15,128.60 : x
  2. Step 2: Convert to fraction form
    27,228.78/37,575.09 = 15,128.60/x
  3. Step 3: Cross multiply
    27,228.78x = 37,575.09 × 15,128.60
  4. Step 4: Simplify right side
    27,228.78x = 568,458,318.70
  5. Step 5: Solve for x
    x = 568,458,318.70/27,228.78
  6. Step 6: Final answer
    x = 20,877.11

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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.