Home / 20,324.77-28,049.55-11,371.77

Finding the Fourth Proportional to 20,324.77, 28,049.55 and 11,371.77

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Solution

The fourth proportional to 20,324.77, 28,049.55 and 11,371.77 is: 15,693.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.77 : 28,049.55 = 11,371.77 : x
  2. Step 2: Convert to fraction form
    20,324.77/28,049.55 = 11,371.77/x
  3. Step 3: Cross multiply
    20,324.77x = 28,049.55 × 11,371.77
  4. Step 4: Simplify right side
    20,324.77x = 318,973,031.20
  5. Step 5: Solve for x
    x = 318,973,031.20/20,324.77
  6. Step 6: Final answer
    x = 15,693.81

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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.