Home / 11,915.72-16,445.80-6,879.24

Finding the Fourth Proportional to 11,915.72, 16,445.80 and 6,879.24

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Solution

The fourth proportional to 11,915.72, 16,445.80 and 6,879.24 is: 9,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.72 : 16,445.80 = 6,879.24 : x
  2. Step 2: Convert to fraction form
    11,915.72/16,445.80 = 6,879.24/x
  3. Step 3: Cross multiply
    11,915.72x = 16,445.80 × 6,879.24
  4. Step 4: Simplify right side
    11,915.72x = 113,134,605.19
  5. Step 5: Solve for x
    x = 113,134,605.19/11,915.72
  6. Step 6: Final answer
    x = 9,494.57

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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.