Home / 11,175.38-15,421.98-6,139.42

Finding the Fourth Proportional to 11,175.38, 15,421.98 and 6,139.42

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Solution

The fourth proportional to 11,175.38, 15,421.98 and 6,139.42 is: 8,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.38 : 15,421.98 = 6,139.42 : x
  2. Step 2: Convert to fraction form
    11,175.38/15,421.98 = 6,139.42/x
  3. Step 3: Cross multiply
    11,175.38x = 15,421.98 × 6,139.42
  4. Step 4: Simplify right side
    11,175.38x = 94,682,012.45
  5. Step 5: Solve for x
    x = 94,682,012.45/11,175.38
  6. Step 6: Final answer
    x = 8,472.38

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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.