Home / 21,392.33-29,519.91-12,439.19

Finding the Fourth Proportional to 21,392.33, 29,519.91 and 12,439.19

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Solution

The fourth proportional to 21,392.33, 29,519.91 and 12,439.19 is: 17,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.33 : 29,519.91 = 12,439.19 : x
  2. Step 2: Convert to fraction form
    21,392.33/29,519.91 = 12,439.19/x
  3. Step 3: Cross multiply
    21,392.33x = 29,519.91 × 12,439.19
  4. Step 4: Simplify right side
    21,392.33x = 367,203,843.07
  5. Step 5: Solve for x
    x = 367,203,843.07/21,392.33
  6. Step 6: Final answer
    x = 17,165.21

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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.