Home / 19,837.08-29,728-13,181.40

Finding the Fourth Proportional to 19,837.08, 29,728 and 13,181.40

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Solution

The fourth proportional to 19,837.08, 29,728 and 13,181.40 is: 19,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,837.08 : 29,728 = 13,181.40 : x
  2. Step 2: Convert to fraction form
    19,837.08/29,728 = 13,181.40/x
  3. Step 3: Cross multiply
    19,837.08x = 29,728 × 13,181.40
  4. Step 4: Simplify right side
    19,837.08x = 391,856,659.20
  5. Step 5: Solve for x
    x = 391,856,659.20/19,837.08
  6. Step 6: Final answer
    x = 19,753.75

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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.