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Finding the Fourth Proportional to 14,223.72, 21,335.49 and 7,653

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Solution

The fourth proportional to 14,223.72, 21,335.49 and 7,653 is: 11,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,223.72 : 21,335.49 = 7,653 : x
  2. Step 2: Convert to fraction form
    14,223.72/21,335.49 = 7,653/x
  3. Step 3: Cross multiply
    14,223.72x = 21,335.49 × 7,653
  4. Step 4: Simplify right side
    14,223.72x = 163,280,504.97
  5. Step 5: Solve for x
    x = 163,280,504.97/14,223.72
  6. Step 6: Final answer
    x = 11,479.45

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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.