Home / 27,921-38,531.07-15,174.30

Finding the Fourth Proportional to 27,921, 38,531.07 and 15,174.30

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Solution

The fourth proportional to 27,921, 38,531.07 and 15,174.30 is: 20,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921 : 38,531.07 = 15,174.30 : x
  2. Step 2: Convert to fraction form
    27,921/38,531.07 = 15,174.30/x
  3. Step 3: Cross multiply
    27,921x = 38,531.07 × 15,174.30
  4. Step 4: Simplify right side
    27,921x = 584,682,015.50
  5. Step 5: Solve for x
    x = 584,682,015.50/27,921
  6. Step 6: Final answer
    x = 20,940.58

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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.