Home / 13,636.56-18,817.20-7,668.48

Finding the Fourth Proportional to 13,636.56, 18,817.20 and 7,668.48

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Solution

The fourth proportional to 13,636.56, 18,817.20 and 7,668.48 is: 10,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.56 : 18,817.20 = 7,668.48 : x
  2. Step 2: Convert to fraction form
    13,636.56/18,817.20 = 7,668.48/x
  3. Step 3: Cross multiply
    13,636.56x = 18,817.20 × 7,668.48
  4. Step 4: Simplify right side
    13,636.56x = 144,299,321.86
  5. Step 5: Solve for x
    x = 144,299,321.86/13,636.56
  6. Step 6: Final answer
    x = 10,581.80

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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.