Home / 14,135.66-21,170.68-13,643.60

Finding the Fourth Proportional to 14,135.66, 21,170.68 and 13,643.60

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Solution

The fourth proportional to 14,135.66, 21,170.68 and 13,643.60 is: 20,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.66 : 21,170.68 = 13,643.60 : x
  2. Step 2: Convert to fraction form
    14,135.66/21,170.68 = 13,643.60/x
  3. Step 3: Cross multiply
    14,135.66x = 21,170.68 × 13,643.60
  4. Step 4: Simplify right side
    14,135.66x = 288,844,289.65
  5. Step 5: Solve for x
    x = 288,844,289.65/14,135.66
  6. Step 6: Final answer
    x = 20,433.73

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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.