Home / 19,464.72-29,211.16-7,781.20

Finding the Fourth Proportional to 19,464.72, 29,211.16 and 7,781.20

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Solution

The fourth proportional to 19,464.72, 29,211.16 and 7,781.20 is: 11,677.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,464.72 : 29,211.16 = 7,781.20 : x
  2. Step 2: Convert to fraction form
    19,464.72/29,211.16 = 7,781.20/x
  3. Step 3: Cross multiply
    19,464.72x = 29,211.16 × 7,781.20
  4. Step 4: Simplify right side
    19,464.72x = 227,297,878.19
  5. Step 5: Solve for x
    x = 227,297,878.19/19,464.72
  6. Step 6: Final answer
    x = 11,677.43

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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.