Home / 13,104.45-18,087.98-8,915.13

Finding the Fourth Proportional to 13,104.45, 18,087.98 and 8,915.13

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Solution

The fourth proportional to 13,104.45, 18,087.98 and 8,915.13 is: 12,305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.45 : 18,087.98 = 8,915.13 : x
  2. Step 2: Convert to fraction form
    13,104.45/18,087.98 = 8,915.13/x
  3. Step 3: Cross multiply
    13,104.45x = 18,087.98 × 8,915.13
  4. Step 4: Simplify right side
    13,104.45x = 161,256,648.56
  5. Step 5: Solve for x
    x = 161,256,648.56/13,104.45
  6. Step 6: Final answer
    x = 12,305.49

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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.