Home / 11,174.85-15,420.53-6,139.42

Finding the Fourth Proportional to 11,174.85, 15,420.53 and 6,139.42

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Solution

The fourth proportional to 11,174.85, 15,420.53 and 6,139.42 is: 8,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,174.85 : 15,420.53 = 6,139.42 : x
  2. Step 2: Convert to fraction form
    11,174.85/15,420.53 = 6,139.42/x
  3. Step 3: Cross multiply
    11,174.85x = 15,420.53 × 6,139.42
  4. Step 4: Simplify right side
    11,174.85x = 94,673,087.09
  5. Step 5: Solve for x
    x = 94,673,087.09/11,174.85
  6. Step 6: Final answer
    x = 8,471.98

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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.