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Finding the Fourth Proportional to 14,172.12, 21,258 and 6,375.42

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Solution

The fourth proportional to 14,172.12, 21,258 and 6,375.42 is: 9,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.12 : 21,258 = 6,375.42 : x
  2. Step 2: Convert to fraction form
    14,172.12/21,258 = 6,375.42/x
  3. Step 3: Cross multiply
    14,172.12x = 21,258 × 6,375.42
  4. Step 4: Simplify right side
    14,172.12x = 135,528,678.36
  5. Step 5: Solve for x
    x = 135,528,678.36/14,172.12
  6. Step 6: Final answer
    x = 9,563.05

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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.