Home / 13,612.49-18,787.26-8,310.36

Finding the Fourth Proportional to 13,612.49, 18,787.26 and 8,310.36

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Solution

The fourth proportional to 13,612.49, 18,787.26 and 8,310.36 is: 11,469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.49 : 18,787.26 = 8,310.36 : x
  2. Step 2: Convert to fraction form
    13,612.49/18,787.26 = 8,310.36/x
  3. Step 3: Cross multiply
    13,612.49x = 18,787.26 × 8,310.36
  4. Step 4: Simplify right side
    13,612.49x = 156,128,894.01
  5. Step 5: Solve for x
    x = 156,128,894.01/13,612.49
  6. Step 6: Final answer
    x = 11,469.53

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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.