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Finding the Fourth Proportional to 28,674.66, 43,007.67 and 9,699.78

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Solution

The fourth proportional to 28,674.66, 43,007.67 and 9,699.78 is: 14,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,674.66 : 43,007.67 = 9,699.78 : x
  2. Step 2: Convert to fraction form
    28,674.66/43,007.67 = 9,699.78/x
  3. Step 3: Cross multiply
    28,674.66x = 43,007.67 × 9,699.78
  4. Step 4: Simplify right side
    28,674.66x = 417,164,937.31
  5. Step 5: Solve for x
    x = 417,164,937.31/28,674.66
  6. Step 6: Final answer
    x = 14,548.21

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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.