Home / 21,470.29-29,623.39-12,393.43

Finding the Fourth Proportional to 21,470.29, 29,623.39 and 12,393.43

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Solution

The fourth proportional to 21,470.29, 29,623.39 and 12,393.43 is: 17,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.29 : 29,623.39 = 12,393.43 : x
  2. Step 2: Convert to fraction form
    21,470.29/29,623.39 = 12,393.43/x
  3. Step 3: Cross multiply
    21,470.29x = 29,623.39 × 12,393.43
  4. Step 4: Simplify right side
    21,470.29x = 367,135,410.33
  5. Step 5: Solve for x
    x = 367,135,410.33/21,470.29
  6. Step 6: Final answer
    x = 17,099.69

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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.