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Finding the Fourth Proportional to 18,714, 28,075.62 and 5,566.32

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Solution

The fourth proportional to 18,714, 28,075.62 and 5,566.32 is: 8,350.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,714 : 28,075.62 = 5,566.32 : x
  2. Step 2: Convert to fraction form
    18,714/28,075.62 = 5,566.32/x
  3. Step 3: Cross multiply
    18,714x = 28,075.62 × 5,566.32
  4. Step 4: Simplify right side
    18,714x = 156,277,885.12
  5. Step 5: Solve for x
    x = 156,277,885.12/18,714
  6. Step 6: Final answer
    x = 8,350.85

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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.