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Finding the Fourth Proportional to 28,694.63, 42,962.11 and 14,624.32

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Solution

The fourth proportional to 28,694.63, 42,962.11 and 14,624.32 is: 21,895.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,694.63 : 42,962.11 = 14,624.32 : x
  2. Step 2: Convert to fraction form
    28,694.63/42,962.11 = 14,624.32/x
  3. Step 3: Cross multiply
    28,694.63x = 42,962.11 × 14,624.32
  4. Step 4: Simplify right side
    28,694.63x = 628,291,644.52
  5. Step 5: Solve for x
    x = 628,291,644.52/28,694.63
  6. Step 6: Final answer
    x = 21,895.79

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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.