Home / 13,863.15-20,776.53-12,103.68

Finding the Fourth Proportional to 13,863.15, 20,776.53 and 12,103.68

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Solution

The fourth proportional to 13,863.15, 20,776.53 and 12,103.68 is: 18,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.15 : 20,776.53 = 12,103.68 : x
  2. Step 2: Convert to fraction form
    13,863.15/20,776.53 = 12,103.68/x
  3. Step 3: Cross multiply
    13,863.15x = 20,776.53 × 12,103.68
  4. Step 4: Simplify right side
    13,863.15x = 251,472,470.63
  5. Step 5: Solve for x
    x = 251,472,470.63/13,863.15
  6. Step 6: Final answer
    x = 18,139.63

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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.