Home / 20,133.60-27,784.62-11,181.66

Finding the Fourth Proportional to 20,133.60, 27,784.62 and 11,181.66

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Solution

The fourth proportional to 20,133.60, 27,784.62 and 11,181.66 is: 15,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.60 : 27,784.62 = 11,181.66 : x
  2. Step 2: Convert to fraction form
    20,133.60/27,784.62 = 11,181.66/x
  3. Step 3: Cross multiply
    20,133.60x = 27,784.62 × 11,181.66
  4. Step 4: Simplify right side
    20,133.60x = 310,678,174.07
  5. Step 5: Solve for x
    x = 310,678,174.07/20,133.60
  6. Step 6: Final answer
    x = 15,430.83

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1.5x scale

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.