Home / 15,342.27-21,172.94-8,627.86

Finding the Fourth Proportional to 15,342.27, 21,172.94 and 8,627.86

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Solution

The fourth proportional to 15,342.27, 21,172.94 and 8,627.86 is: 11,906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.27 : 21,172.94 = 8,627.86 : x
  2. Step 2: Convert to fraction form
    15,342.27/21,172.94 = 8,627.86/x
  3. Step 3: Cross multiply
    15,342.27x = 21,172.94 × 8,627.86
  4. Step 4: Simplify right side
    15,342.27x = 182,677,162.11
  5. Step 5: Solve for x
    x = 182,677,162.11/15,342.27
  6. Step 6: Final answer
    x = 11,906.79

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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.