Home / 20,145.54-27,799.56-11,192.88

Finding the Fourth Proportional to 20,145.54, 27,799.56 and 11,192.88

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Solution

The fourth proportional to 20,145.54, 27,799.56 and 11,192.88 is: 15,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.54 : 27,799.56 = 11,192.88 : x
  2. Step 2: Convert to fraction form
    20,145.54/27,799.56 = 11,192.88/x
  3. Step 3: Cross multiply
    20,145.54x = 27,799.56 × 11,192.88
  4. Step 4: Simplify right side
    20,145.54x = 311,157,139.13
  5. Step 5: Solve for x
    x = 311,157,139.13/20,145.54
  6. Step 6: Final answer
    x = 15,445.46

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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.