Home / 11,431.11-15,773.90-7,239.27

Finding the Fourth Proportional to 11,431.11, 15,773.90 and 7,239.27

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Solution

The fourth proportional to 11,431.11, 15,773.90 and 7,239.27 is: 9,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.11 : 15,773.90 = 7,239.27 : x
  2. Step 2: Convert to fraction form
    11,431.11/15,773.90 = 7,239.27/x
  3. Step 3: Cross multiply
    11,431.11x = 15,773.90 × 7,239.27
  4. Step 4: Simplify right side
    11,431.11x = 114,191,484.86
  5. Step 5: Solve for x
    x = 114,191,484.86/11,431.11
  6. Step 6: Final answer
    x = 9,989.54

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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.