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Finding the Fourth Proportional to 11,859, 16,372.97 and 7,389.28

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Solution

The fourth proportional to 11,859, 16,372.97 and 7,389.28 is: 10,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859 : 16,372.97 = 7,389.28 : x
  2. Step 2: Convert to fraction form
    11,859/16,372.97 = 7,389.28/x
  3. Step 3: Cross multiply
    11,859x = 16,372.97 × 7,389.28
  4. Step 4: Simplify right side
    11,859x = 120,984,459.76
  5. Step 5: Solve for x
    x = 120,984,459.76/11,859
  6. Step 6: Final answer
    x = 10,201.91

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1.5x scale

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.