Home / 19,137.86-28,707.32-5,286.86

Finding the Fourth Proportional to 19,137.86, 28,707.32 and 5,286.86

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Solution

The fourth proportional to 19,137.86, 28,707.32 and 5,286.86 is: 7,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.86 : 28,707.32 = 5,286.86 : x
  2. Step 2: Convert to fraction form
    19,137.86/28,707.32 = 5,286.86/x
  3. Step 3: Cross multiply
    19,137.86x = 28,707.32 × 5,286.86
  4. Step 4: Simplify right side
    19,137.86x = 151,771,438.28
  5. Step 5: Solve for x
    x = 151,771,438.28/19,137.86
  6. Step 6: Final answer
    x = 7,930.43

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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.