Home / 10,638.52-15,961.24-5,091.16

Finding the Fourth Proportional to 10,638.52, 15,961.24 and 5,091.16

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Solution

The fourth proportional to 10,638.52, 15,961.24 and 5,091.16 is: 7,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.52 : 15,961.24 = 5,091.16 : x
  2. Step 2: Convert to fraction form
    10,638.52/15,961.24 = 5,091.16/x
  3. Step 3: Cross multiply
    10,638.52x = 15,961.24 × 5,091.16
  4. Step 4: Simplify right side
    10,638.52x = 81,261,226.64
  5. Step 5: Solve for x
    x = 81,261,226.64/10,638.52
  6. Step 6: Final answer
    x = 7,638.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.