Home / 13,723.16-20,535.53-11,880.61

Finding the Fourth Proportional to 13,723.16, 20,535.53 and 11,880.61

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Solution

The fourth proportional to 13,723.16, 20,535.53 and 11,880.61 is: 17,778.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.16 : 20,535.53 = 11,880.61 : x
  2. Step 2: Convert to fraction form
    13,723.16/20,535.53 = 11,880.61/x
  3. Step 3: Cross multiply
    13,723.16x = 20,535.53 × 11,880.61
  4. Step 4: Simplify right side
    13,723.16x = 243,974,512.33
  5. Step 5: Solve for x
    x = 243,974,512.33/13,723.16
  6. Step 6: Final answer
    x = 17,778.31

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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.