Home / 15,031.86-20,745.52-8,658.66

Finding the Fourth Proportional to 15,031.86, 20,745.52 and 8,658.66

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Solution

The fourth proportional to 15,031.86, 20,745.52 and 8,658.66 is: 11,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.86 : 20,745.52 = 8,658.66 : x
  2. Step 2: Convert to fraction form
    15,031.86/20,745.52 = 8,658.66/x
  3. Step 3: Cross multiply
    15,031.86x = 20,745.52 × 8,658.66
  4. Step 4: Simplify right side
    15,031.86x = 179,628,404.20
  5. Step 5: Solve for x
    x = 179,628,404.20/15,031.86
  6. Step 6: Final answer
    x = 11,949.85

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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.