Home / 20,215.90-27,897.34-11,262.85

Finding the Fourth Proportional to 20,215.90, 27,897.34 and 11,262.85

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Solution

The fourth proportional to 20,215.90, 27,897.34 and 11,262.85 is: 15,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.90 : 27,897.34 = 11,262.85 : x
  2. Step 2: Convert to fraction form
    20,215.90/27,897.34 = 11,262.85/x
  3. Step 3: Cross multiply
    20,215.90x = 27,897.34 × 11,262.85
  4. Step 4: Simplify right side
    20,215.90x = 314,203,555.82
  5. Step 5: Solve for x
    x = 314,203,555.82/20,215.90
  6. Step 6: Final answer
    x = 15,542.40

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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.