Home / 13,853.10-20,766.15-7,923.90

Finding the Fourth Proportional to 13,853.10, 20,766.15 and 7,923.90

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Solution

The fourth proportional to 13,853.10, 20,766.15 and 7,923.90 is: 11,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.10 : 20,766.15 = 7,923.90 : x
  2. Step 2: Convert to fraction form
    13,853.10/20,766.15 = 7,923.90/x
  3. Step 3: Cross multiply
    13,853.10x = 20,766.15 × 7,923.90
  4. Step 4: Simplify right side
    13,853.10x = 164,548,895.99
  5. Step 5: Solve for x
    x = 164,548,895.99/13,853.10
  6. Step 6: Final answer
    x = 11,878.13

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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.