Home / 11,207.72-16,789.30-10,289.18

Finding the Fourth Proportional to 11,207.72, 16,789.30 and 10,289.18

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Solution

The fourth proportional to 11,207.72, 16,789.30 and 10,289.18 is: 15,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,207.72 : 16,789.30 = 10,289.18 : x
  2. Step 2: Convert to fraction form
    11,207.72/16,789.30 = 10,289.18/x
  3. Step 3: Cross multiply
    11,207.72x = 16,789.30 × 10,289.18
  4. Step 4: Simplify right side
    11,207.72x = 172,748,129.77
  5. Step 5: Solve for x
    x = 172,748,129.77/11,207.72
  6. Step 6: Final answer
    x = 15,413.32

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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.