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Finding the Fourth Proportional to 14,394.91, 21,561.11 and 6,983.79

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Solution

The fourth proportional to 14,394.91, 21,561.11 and 6,983.79 is: 10,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,394.91 : 21,561.11 = 6,983.79 : x
  2. Step 2: Convert to fraction form
    14,394.91/21,561.11 = 6,983.79/x
  3. Step 3: Cross multiply
    14,394.91x = 21,561.11 × 6,983.79
  4. Step 4: Simplify right side
    14,394.91x = 150,578,264.41
  5. Step 5: Solve for x
    x = 150,578,264.41/14,394.91
  6. Step 6: Final answer
    x = 10,460.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.