Home / 20,031.24-27,643.54-11,079.36

Finding the Fourth Proportional to 20,031.24, 27,643.54 and 11,079.36

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Solution

The fourth proportional to 20,031.24, 27,643.54 and 11,079.36 is: 15,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.24 : 27,643.54 = 11,079.36 : x
  2. Step 2: Convert to fraction form
    20,031.24/27,643.54 = 11,079.36/x
  3. Step 3: Cross multiply
    20,031.24x = 27,643.54 × 11,079.36
  4. Step 4: Simplify right side
    20,031.24x = 306,272,731.33
  5. Step 5: Solve for x
    x = 306,272,731.33/20,031.24
  6. Step 6: Final answer
    x = 15,289.75

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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.