Home / 27,917.90-38,526.20-15,171.28

Finding the Fourth Proportional to 27,917.90, 38,526.20 and 15,171.28

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Solution

The fourth proportional to 27,917.90, 38,526.20 and 15,171.28 is: 20,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,917.90 : 38,526.20 = 15,171.28 : x
  2. Step 2: Convert to fraction form
    27,917.90/38,526.20 = 15,171.28/x
  3. Step 3: Cross multiply
    27,917.90x = 38,526.20 × 15,171.28
  4. Step 4: Simplify right side
    27,917.90x = 584,491,767.54
  5. Step 5: Solve for x
    x = 584,491,767.54/27,917.90
  6. Step 6: Final answer
    x = 20,936.09

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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.