Home / 13,838.85-20,766.48-12,963.19

Finding the Fourth Proportional to 13,838.85, 20,766.48 and 12,963.19

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Solution

The fourth proportional to 13,838.85, 20,766.48 and 12,963.19 is: 19,452.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.85 : 20,766.48 = 12,963.19 : x
  2. Step 2: Convert to fraction form
    13,838.85/20,766.48 = 12,963.19/x
  3. Step 3: Cross multiply
    13,838.85x = 20,766.48 × 12,963.19
  4. Step 4: Simplify right side
    13,838.85x = 269,199,764.28
  5. Step 5: Solve for x
    x = 269,199,764.28/13,838.85
  6. Step 6: Final answer
    x = 19,452.47

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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.