Home / 14,122.45-21,183.66-13,188.29

Finding the Fourth Proportional to 14,122.45, 21,183.66 and 13,188.29

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Solution

The fourth proportional to 14,122.45, 21,183.66 and 13,188.29 is: 19,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.45 : 21,183.66 = 13,188.29 : x
  2. Step 2: Convert to fraction form
    14,122.45/21,183.66 = 13,188.29/x
  3. Step 3: Cross multiply
    14,122.45x = 21,183.66 × 13,188.29
  4. Step 4: Simplify right side
    14,122.45x = 279,376,145.42
  5. Step 5: Solve for x
    x = 279,376,145.42/14,122.45
  6. Step 6: Final answer
    x = 19,782.41

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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.