Home / 11,943.96-16,481.88-6,638.40

Finding the Fourth Proportional to 11,943.96, 16,481.88 and 6,638.40

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Solution

The fourth proportional to 11,943.96, 16,481.88 and 6,638.40 is: 9,160.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.96 : 16,481.88 = 6,638.40 : x
  2. Step 2: Convert to fraction form
    11,943.96/16,481.88 = 6,638.40/x
  3. Step 3: Cross multiply
    11,943.96x = 16,481.88 × 6,638.40
  4. Step 4: Simplify right side
    11,943.96x = 109,413,312.19
  5. Step 5: Solve for x
    x = 109,413,312.19/11,943.96
  6. Step 6: Final answer
    x = 9,160.56

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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.