Home / 13,653.15-20,487.69-5,755.18

Finding the Fourth Proportional to 13,653.15, 20,487.69 and 5,755.18

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Solution

The fourth proportional to 13,653.15, 20,487.69 and 5,755.18 is: 8,636.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.15 : 20,487.69 = 5,755.18 : x
  2. Step 2: Convert to fraction form
    13,653.15/20,487.69 = 5,755.18/x
  3. Step 3: Cross multiply
    13,653.15x = 20,487.69 × 5,755.18
  4. Step 4: Simplify right side
    13,653.15x = 117,910,343.73
  5. Step 5: Solve for x
    x = 117,910,343.73/13,653.15
  6. Step 6: Final answer
    x = 8,636.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.