Home / 15,086.27-20,820.29-8,371.77

Finding the Fourth Proportional to 15,086.27, 20,820.29 and 8,371.77

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Solution

The fourth proportional to 15,086.27, 20,820.29 and 8,371.77 is: 11,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.27 : 20,820.29 = 8,371.77 : x
  2. Step 2: Convert to fraction form
    15,086.27/20,820.29 = 8,371.77/x
  3. Step 3: Cross multiply
    15,086.27x = 20,820.29 × 8,371.77
  4. Step 4: Simplify right side
    15,086.27x = 174,302,679.21
  5. Step 5: Solve for x
    x = 174,302,679.21/15,086.27
  6. Step 6: Final answer
    x = 11,553.73

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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.