Home / 21,479.84-29,643.54-12,049.82

Finding the Fourth Proportional to 21,479.84, 29,643.54 and 12,049.82

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Solution

The fourth proportional to 21,479.84, 29,643.54 and 12,049.82 is: 16,629.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.84 : 29,643.54 = 12,049.82 : x
  2. Step 2: Convert to fraction form
    21,479.84/29,643.54 = 12,049.82/x
  3. Step 3: Cross multiply
    21,479.84x = 29,643.54 × 12,049.82
  4. Step 4: Simplify right side
    21,479.84x = 357,199,321.16
  5. Step 5: Solve for x
    x = 357,199,321.16/21,479.84
  6. Step 6: Final answer
    x = 16,629.51

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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.