Home / 10,721.82-16,138.60-9,703.02

Finding the Fourth Proportional to 10,721.82, 16,138.60 and 9,703.02

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Solution

The fourth proportional to 10,721.82, 16,138.60 and 9,703.02 is: 14,605.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.82 : 16,138.60 = 9,703.02 : x
  2. Step 2: Convert to fraction form
    10,721.82/16,138.60 = 9,703.02/x
  3. Step 3: Cross multiply
    10,721.82x = 16,138.60 × 9,703.02
  4. Step 4: Simplify right side
    10,721.82x = 156,593,158.57
  5. Step 5: Solve for x
    x = 156,593,158.57/10,721.82
  6. Step 6: Final answer
    x = 14,605.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.