Home / 20,009.36-27,612.80-11,057.20

Finding the Fourth Proportional to 20,009.36, 27,612.80 and 11,057.20

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Solution

The fourth proportional to 20,009.36, 27,612.80 and 11,057.20 is: 15,258.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.36 : 27,612.80 = 11,057.20 : x
  2. Step 2: Convert to fraction form
    20,009.36/27,612.80 = 11,057.20/x
  3. Step 3: Cross multiply
    20,009.36x = 27,612.80 × 11,057.20
  4. Step 4: Simplify right side
    20,009.36x = 305,320,252.16
  5. Step 5: Solve for x
    x = 305,320,252.16/20,009.36
  6. Step 6: Final answer
    x = 15,258.87

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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.