Home / 20,215.77-27,896.88-11,264.25

Finding the Fourth Proportional to 20,215.77, 27,896.88 and 11,264.25

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Solution

The fourth proportional to 20,215.77, 27,896.88 and 11,264.25 is: 15,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.77 : 27,896.88 = 11,264.25 : x
  2. Step 2: Convert to fraction form
    20,215.77/27,896.88 = 11,264.25/x
  3. Step 3: Cross multiply
    20,215.77x = 27,896.88 × 11,264.25
  4. Step 4: Simplify right side
    20,215.77x = 314,237,430.54
  5. Step 5: Solve for x
    x = 314,237,430.54/20,215.77
  6. Step 6: Final answer
    x = 15,544.17

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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.