Home / 13,091.72-19,638.14-4,326.64

Finding the Fourth Proportional to 13,091.72, 19,638.14 and 4,326.64

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Solution

The fourth proportional to 13,091.72, 19,638.14 and 4,326.64 is: 6,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.72 : 19,638.14 = 4,326.64 : x
  2. Step 2: Convert to fraction form
    13,091.72/19,638.14 = 4,326.64/x
  3. Step 3: Cross multiply
    13,091.72x = 19,638.14 × 4,326.64
  4. Step 4: Simplify right side
    13,091.72x = 84,967,162.05
  5. Step 5: Solve for x
    x = 84,967,162.05/13,091.72
  6. Step 6: Final answer
    x = 6,490.15

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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.