Home / 13,688.12-20,523.51-5,786.57

Finding the Fourth Proportional to 13,688.12, 20,523.51 and 5,786.57

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Solution

The fourth proportional to 13,688.12, 20,523.51 and 5,786.57 is: 8,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.12 : 20,523.51 = 5,786.57 : x
  2. Step 2: Convert to fraction form
    13,688.12/20,523.51 = 5,786.57/x
  3. Step 3: Cross multiply
    13,688.12x = 20,523.51 × 5,786.57
  4. Step 4: Simplify right side
    13,688.12x = 118,760,624.64
  5. Step 5: Solve for x
    x = 118,760,624.64/13,688.12
  6. Step 6: Final answer
    x = 8,676.19

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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.