Home / 13,699.37-18,915.17-8,856.97

Finding the Fourth Proportional to 13,699.37, 18,915.17 and 8,856.97

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Solution

The fourth proportional to 13,699.37, 18,915.17 and 8,856.97 is: 12,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.37 : 18,915.17 = 8,856.97 : x
  2. Step 2: Convert to fraction form
    13,699.37/18,915.17 = 8,856.97/x
  3. Step 3: Cross multiply
    13,699.37x = 18,915.17 × 8,856.97
  4. Step 4: Simplify right side
    13,699.37x = 167,531,001.66
  5. Step 5: Solve for x
    x = 167,531,001.66/13,699.37
  6. Step 6: Final answer
    x = 12,229.10

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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.