Home / 13,940.61-19,229.92-8,631.64

Finding the Fourth Proportional to 13,940.61, 19,229.92 and 8,631.64

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Solution

The fourth proportional to 13,940.61, 19,229.92 and 8,631.64 is: 11,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.61 : 19,229.92 = 8,631.64 : x
  2. Step 2: Convert to fraction form
    13,940.61/19,229.92 = 8,631.64/x
  3. Step 3: Cross multiply
    13,940.61x = 19,229.92 × 8,631.64
  4. Step 4: Simplify right side
    13,940.61x = 165,985,746.67
  5. Step 5: Solve for x
    x = 165,985,746.67/13,940.61
  6. Step 6: Final answer
    x = 11,906.63

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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.