Home / 18,989.22-28,465.32-7,587.75

Finding the Fourth Proportional to 18,989.22, 28,465.32 and 7,587.75

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Solution

The fourth proportional to 18,989.22, 28,465.32 and 7,587.75 is: 11,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.22 : 28,465.32 = 7,587.75 : x
  2. Step 2: Convert to fraction form
    18,989.22/28,465.32 = 7,587.75/x
  3. Step 3: Cross multiply
    18,989.22x = 28,465.32 × 7,587.75
  4. Step 4: Simplify right side
    18,989.22x = 215,987,551.56
  5. Step 5: Solve for x
    x = 215,987,551.56/18,989.22
  6. Step 6: Final answer
    x = 11,374.22

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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.