Home / 21,784.66-30,072.78-16,747.11

Finding the Fourth Proportional to 21,784.66, 30,072.78 and 16,747.11

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Solution

The fourth proportional to 21,784.66, 30,072.78 and 16,747.11 is: 23,118.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.66 : 30,072.78 = 16,747.11 : x
  2. Step 2: Convert to fraction form
    21,784.66/30,072.78 = 16,747.11/x
  3. Step 3: Cross multiply
    21,784.66x = 30,072.78 × 16,747.11
  4. Step 4: Simplify right side
    21,784.66x = 503,632,154.67
  5. Step 5: Solve for x
    x = 503,632,154.67/21,784.66
  6. Step 6: Final answer
    x = 23,118.66

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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.