Home / 21,540.84-29,723.14-12,107.58

Finding the Fourth Proportional to 21,540.84, 29,723.14 and 12,107.58

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Solution

The fourth proportional to 21,540.84, 29,723.14 and 12,107.58 is: 16,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.84 : 29,723.14 = 12,107.58 : x
  2. Step 2: Convert to fraction form
    21,540.84/29,723.14 = 12,107.58/x
  3. Step 3: Cross multiply
    21,540.84x = 29,723.14 × 12,107.58
  4. Step 4: Simplify right side
    21,540.84x = 359,875,295.40
  5. Step 5: Solve for x
    x = 359,875,295.40/21,540.84
  6. Step 6: Final answer
    x = 16,706.65

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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.