Home / 21,397.91-29,520.06-14,326.61

Finding the Fourth Proportional to 21,397.91, 29,520.06 and 14,326.61

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Solution

The fourth proportional to 21,397.91, 29,520.06 and 14,326.61 is: 19,764.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.91 : 29,520.06 = 14,326.61 : x
  2. Step 2: Convert to fraction form
    21,397.91/29,520.06 = 14,326.61/x
  3. Step 3: Cross multiply
    21,397.91x = 29,520.06 × 14,326.61
  4. Step 4: Simplify right side
    21,397.91x = 422,922,386.80
  5. Step 5: Solve for x
    x = 422,922,386.80/21,397.91
  6. Step 6: Final answer
    x = 19,764.66

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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.