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Finding the Fourth Proportional to 14,421, 21,633.84 and 5,651.16

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Solution

The fourth proportional to 14,421, 21,633.84 and 5,651.16 is: 8,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421 : 21,633.84 = 5,651.16 : x
  2. Step 2: Convert to fraction form
    14,421/21,633.84 = 5,651.16/x
  3. Step 3: Cross multiply
    14,421x = 21,633.84 × 5,651.16
  4. Step 4: Simplify right side
    14,421x = 122,256,291.25
  5. Step 5: Solve for x
    x = 122,256,291.25/14,421
  6. Step 6: Final answer
    x = 8,477.66

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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.