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Finding the Fourth Proportional to 14,448.78, 21,678.39 and 5,678.82

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Solution

The fourth proportional to 14,448.78, 21,678.39 and 5,678.82 is: 8,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,448.78 : 21,678.39 = 5,678.82 : x
  2. Step 2: Convert to fraction form
    14,448.78/21,678.39 = 5,678.82/x
  3. Step 3: Cross multiply
    14,448.78x = 21,678.39 × 5,678.82
  4. Step 4: Simplify right side
    14,448.78x = 123,107,674.70
  5. Step 5: Solve for x
    x = 123,107,674.70/14,448.78
  6. Step 6: Final answer
    x = 8,520.28

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1.5x scale

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.