Home / 20,215.84-27,895.44-11,261.28

Finding the Fourth Proportional to 20,215.84, 27,895.44 and 11,261.28

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Solution

The fourth proportional to 20,215.84, 27,895.44 and 11,261.28 is: 15,539.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.84 : 27,895.44 = 11,261.28 : x
  2. Step 2: Convert to fraction form
    20,215.84/27,895.44 = 11,261.28/x
  3. Step 3: Cross multiply
    20,215.84x = 27,895.44 × 11,261.28
  4. Step 4: Simplify right side
    20,215.84x = 314,138,360.56
  5. Step 5: Solve for x
    x = 314,138,360.56/20,215.84
  6. Step 6: Final answer
    x = 15,539.22

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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.