Home / 20,110.72-27,752.58-11,158

Finding the Fourth Proportional to 20,110.72, 27,752.58 and 11,158

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Solution

The fourth proportional to 20,110.72, 27,752.58 and 11,158 is: 15,397.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.72 : 27,752.58 = 11,158 : x
  2. Step 2: Convert to fraction form
    20,110.72/27,752.58 = 11,158/x
  3. Step 3: Cross multiply
    20,110.72x = 27,752.58 × 11,158
  4. Step 4: Simplify right side
    20,110.72x = 309,663,287.64
  5. Step 5: Solve for x
    x = 309,663,287.64/20,110.72
  6. Step 6: Final answer
    x = 15,397.92

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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.