Home / 13,688.96-20,531.40-3,829.22

Finding the Fourth Proportional to 13,688.96, 20,531.40 and 3,829.22

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Solution

The fourth proportional to 13,688.96, 20,531.40 and 3,829.22 is: 5,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.96 : 20,531.40 = 3,829.22 : x
  2. Step 2: Convert to fraction form
    13,688.96/20,531.40 = 3,829.22/x
  3. Step 3: Cross multiply
    13,688.96x = 20,531.40 × 3,829.22
  4. Step 4: Simplify right side
    13,688.96x = 78,619,247.51
  5. Step 5: Solve for x
    x = 78,619,247.51/13,688.96
  6. Step 6: Final answer
    x = 5,743.26

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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.