Home / 12,372.48-17,068.05-8,121.87

Finding the Fourth Proportional to 12,372.48, 17,068.05 and 8,121.87

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Solution

The fourth proportional to 12,372.48, 17,068.05 and 8,121.87 is: 11,204.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.48 : 17,068.05 = 8,121.87 : x
  2. Step 2: Convert to fraction form
    12,372.48/17,068.05 = 8,121.87/x
  3. Step 3: Cross multiply
    12,372.48x = 17,068.05 × 8,121.87
  4. Step 4: Simplify right side
    12,372.48x = 138,624,483.25
  5. Step 5: Solve for x
    x = 138,624,483.25/12,372.48
  6. Step 6: Final answer
    x = 11,204.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.