Home / 20,215.20-27,896.15-11,262.47

Finding the Fourth Proportional to 20,215.20, 27,896.15 and 11,262.47

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Solution

The fourth proportional to 20,215.20, 27,896.15 and 11,262.47 is: 15,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.20 : 27,896.15 = 11,262.47 : x
  2. Step 2: Convert to fraction form
    20,215.20/27,896.15 = 11,262.47/x
  3. Step 3: Cross multiply
    20,215.20x = 27,896.15 × 11,262.47
  4. Step 4: Simplify right side
    20,215.20x = 314,179,496.18
  5. Step 5: Solve for x
    x = 314,179,496.18/20,215.20
  6. Step 6: Final answer
    x = 15,541.75

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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.