Home / 13,688.20-20,531.48-3,827.26

Finding the Fourth Proportional to 13,688.20, 20,531.48 and 3,827.26

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Solution

The fourth proportional to 13,688.20, 20,531.48 and 3,827.26 is: 5,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.20 : 20,531.48 = 3,827.26 : x
  2. Step 2: Convert to fraction form
    13,688.20/20,531.48 = 3,827.26/x
  3. Step 3: Cross multiply
    13,688.20x = 20,531.48 × 3,827.26
  4. Step 4: Simplify right side
    13,688.20x = 78,579,209.49
  5. Step 5: Solve for x
    x = 78,579,209.49/13,688.20
  6. Step 6: Final answer
    x = 5,740.66

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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.