Home / 21,396.22-29,529.55-13,224.87

Finding the Fourth Proportional to 21,396.22, 29,529.55 and 13,224.87

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Solution

The fourth proportional to 21,396.22, 29,529.55 and 13,224.87 is: 18,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.22 : 29,529.55 = 13,224.87 : x
  2. Step 2: Convert to fraction form
    21,396.22/29,529.55 = 13,224.87/x
  3. Step 3: Cross multiply
    21,396.22x = 29,529.55 × 13,224.87
  4. Step 4: Simplify right side
    21,396.22x = 390,524,476.44
  5. Step 5: Solve for x
    x = 390,524,476.44/21,396.22
  6. Step 6: Final answer
    x = 18,252.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.