Home / 13,823.88-20,728.13-8,203.83

Finding the Fourth Proportional to 13,823.88, 20,728.13 and 8,203.83

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Solution

The fourth proportional to 13,823.88, 20,728.13 and 8,203.83 is: 12,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.88 : 20,728.13 = 8,203.83 : x
  2. Step 2: Convert to fraction form
    13,823.88/20,728.13 = 8,203.83/x
  3. Step 3: Cross multiply
    13,823.88x = 20,728.13 × 8,203.83
  4. Step 4: Simplify right side
    13,823.88x = 170,050,013.72
  5. Step 5: Solve for x
    x = 170,050,013.72/13,823.88
  6. Step 6: Final answer
    x = 12,301.18

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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.