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Finding the Fourth Proportional to 18,522.83, 27,784.15 and 7,421.58

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Solution

The fourth proportional to 18,522.83, 27,784.15 and 7,421.58 is: 11,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,522.83 : 27,784.15 = 7,421.58 : x
  2. Step 2: Convert to fraction form
    18,522.83/27,784.15 = 7,421.58/x
  3. Step 3: Cross multiply
    18,522.83x = 27,784.15 × 7,421.58
  4. Step 4: Simplify right side
    18,522.83x = 206,202,273.40
  5. Step 5: Solve for x
    x = 206,202,273.40/18,522.83
  6. Step 6: Final answer
    x = 11,132.33

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1.5x scale

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.