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Finding the Fourth Proportional to 14,263.94, 21,387 and 5,488.40

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Solution

The fourth proportional to 14,263.94, 21,387 and 5,488.40 is: 8,229.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,263.94 : 21,387 = 5,488.40 : x
  2. Step 2: Convert to fraction form
    14,263.94/21,387 = 5,488.40/x
  3. Step 3: Cross multiply
    14,263.94x = 21,387 × 5,488.40
  4. Step 4: Simplify right side
    14,263.94x = 117,380,410.80
  5. Step 5: Solve for x
    x = 117,380,410.80/14,263.94
  6. Step 6: Final answer
    x = 8,229.17

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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.