Home / 20,313.06-28,031.51-11,238.20

Finding the Fourth Proportional to 20,313.06, 28,031.51 and 11,238.20

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Solution

The fourth proportional to 20,313.06, 28,031.51 and 11,238.20 is: 15,508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.06 : 28,031.51 = 11,238.20 : x
  2. Step 2: Convert to fraction form
    20,313.06/28,031.51 = 11,238.20/x
  3. Step 3: Cross multiply
    20,313.06x = 28,031.51 × 11,238.20
  4. Step 4: Simplify right side
    20,313.06x = 315,023,519.33
  5. Step 5: Solve for x
    x = 315,023,519.33/20,313.06
  6. Step 6: Final answer
    x = 15,508.42

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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.