Home / 13,640.50-18,824.70-8,336.62

Finding the Fourth Proportional to 13,640.50, 18,824.70 and 8,336.62

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Solution

The fourth proportional to 13,640.50, 18,824.70 and 8,336.62 is: 11,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.50 : 18,824.70 = 8,336.62 : x
  2. Step 2: Convert to fraction form
    13,640.50/18,824.70 = 8,336.62/x
  3. Step 3: Cross multiply
    13,640.50x = 18,824.70 × 8,336.62
  4. Step 4: Simplify right side
    13,640.50x = 156,934,370.51
  5. Step 5: Solve for x
    x = 156,934,370.51/13,640.50
  6. Step 6: Final answer
    x = 11,505.03

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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.