Home / 20,228.88-27,915.54-11,276.34

Finding the Fourth Proportional to 20,228.88, 27,915.54 and 11,276.34

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Solution

The fourth proportional to 20,228.88, 27,915.54 and 11,276.34 is: 15,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.88 : 27,915.54 = 11,276.34 : x
  2. Step 2: Convert to fraction form
    20,228.88/27,915.54 = 11,276.34/x
  3. Step 3: Cross multiply
    20,228.88x = 27,915.54 × 11,276.34
  4. Step 4: Simplify right side
    20,228.88x = 314,785,120.32
  5. Step 5: Solve for x
    x = 314,785,120.32/20,228.88
  6. Step 6: Final answer
    x = 15,561.17

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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.