Home / 10,712.23-16,040.39-8,620.81

Finding the Fourth Proportional to 10,712.23, 16,040.39 and 8,620.81

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Solution

The fourth proportional to 10,712.23, 16,040.39 and 8,620.81 is: 12,908.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.23 : 16,040.39 = 8,620.81 : x
  2. Step 2: Convert to fraction form
    10,712.23/16,040.39 = 8,620.81/x
  3. Step 3: Cross multiply
    10,712.23x = 16,040.39 × 8,620.81
  4. Step 4: Simplify right side
    10,712.23x = 138,281,135.97
  5. Step 5: Solve for x
    x = 138,281,135.97/10,712.23
  6. Step 6: Final answer
    x = 12,908.72

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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.