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Finding the Fourth Proportional to 14,649.11, 21,978.36 and 5,289.05

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Solution

The fourth proportional to 14,649.11, 21,978.36 and 5,289.05 is: 7,935.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.11 : 21,978.36 = 5,289.05 : x
  2. Step 2: Convert to fraction form
    14,649.11/21,978.36 = 5,289.05/x
  3. Step 3: Cross multiply
    14,649.11x = 21,978.36 × 5,289.05
  4. Step 4: Simplify right side
    14,649.11x = 116,244,535.07
  5. Step 5: Solve for x
    x = 116,244,535.07/14,649.11
  6. Step 6: Final answer
    x = 7,935.27

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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.