Home / 13,353.96-20,132.34-12,639.54

Finding the Fourth Proportional to 13,353.96, 20,132.34 and 12,639.54

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Solution

The fourth proportional to 13,353.96, 20,132.34 and 12,639.54 is: 19,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.96 : 20,132.34 = 12,639.54 : x
  2. Step 2: Convert to fraction form
    13,353.96/20,132.34 = 12,639.54/x
  3. Step 3: Cross multiply
    13,353.96x = 20,132.34 × 12,639.54
  4. Step 4: Simplify right side
    13,353.96x = 254,463,516.72
  5. Step 5: Solve for x
    x = 254,463,516.72/13,353.96
  6. Step 6: Final answer
    x = 19,055.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.