Home / 13,550.39-20,321.48-3,688.39

Finding the Fourth Proportional to 13,550.39, 20,321.48 and 3,688.39

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Solution

The fourth proportional to 13,550.39, 20,321.48 and 3,688.39 is: 5,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.39 : 20,321.48 = 3,688.39 : x
  2. Step 2: Convert to fraction form
    13,550.39/20,321.48 = 3,688.39/x
  3. Step 3: Cross multiply
    13,550.39x = 20,321.48 × 3,688.39
  4. Step 4: Simplify right side
    13,550.39x = 74,953,463.93
  5. Step 5: Solve for x
    x = 74,953,463.93/13,550.39
  6. Step 6: Final answer
    x = 5,531.46

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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.