Home / 13,636.44-18,818.28-7,586.78

Finding the Fourth Proportional to 13,636.44, 18,818.28 and 7,586.78

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Solution

The fourth proportional to 13,636.44, 18,818.28 and 7,586.78 is: 10,469.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.44 : 18,818.28 = 7,586.78 : x
  2. Step 2: Convert to fraction form
    13,636.44/18,818.28 = 7,586.78/x
  3. Step 3: Cross multiply
    13,636.44x = 18,818.28 × 7,586.78
  4. Step 4: Simplify right side
    13,636.44x = 142,770,056.25
  5. Step 5: Solve for x
    x = 142,770,056.25/13,636.44
  6. Step 6: Final answer
    x = 10,469.75

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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.