Home / 10,939.10-16,398.03-8,712.50

Finding the Fourth Proportional to 10,939.10, 16,398.03 and 8,712.50

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Solution

The fourth proportional to 10,939.10, 16,398.03 and 8,712.50 is: 13,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.10 : 16,398.03 = 8,712.50 : x
  2. Step 2: Convert to fraction form
    10,939.10/16,398.03 = 8,712.50/x
  3. Step 3: Cross multiply
    10,939.10x = 16,398.03 × 8,712.50
  4. Step 4: Simplify right side
    10,939.10x = 142,867,799.54
  5. Step 5: Solve for x
    x = 142,867,799.54/10,939.10
  6. Step 6: Final answer
    x = 13,060.29

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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.