Home / 19,171.15-28,747.60-6,689.66

Finding the Fourth Proportional to 19,171.15, 28,747.60 and 6,689.66

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Solution

The fourth proportional to 19,171.15, 28,747.60 and 6,689.66 is: 10,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.15 : 28,747.60 = 6,689.66 : x
  2. Step 2: Convert to fraction form
    19,171.15/28,747.60 = 6,689.66/x
  3. Step 3: Cross multiply
    19,171.15x = 28,747.60 × 6,689.66
  4. Step 4: Simplify right side
    19,171.15x = 192,311,509.35
  5. Step 5: Solve for x
    x = 192,311,509.35/19,171.15
  6. Step 6: Final answer
    x = 10,031.30

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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.