Home / 13,636.20-18,818.48-7,667.84

Finding the Fourth Proportional to 13,636.20, 18,818.48 and 7,667.84

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Solution

The fourth proportional to 13,636.20, 18,818.48 and 7,667.84 is: 10,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.20 : 18,818.48 = 7,667.84 : x
  2. Step 2: Convert to fraction form
    13,636.20/18,818.48 = 7,667.84/x
  3. Step 3: Cross multiply
    13,636.20x = 18,818.48 × 7,667.84
  4. Step 4: Simplify right side
    13,636.20x = 144,297,093.68
  5. Step 5: Solve for x
    x = 144,297,093.68/13,636.20
  6. Step 6: Final answer
    x = 10,581.91

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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.