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Finding the Fourth Proportional to 14,316.60, 21,474 and 4,455.12

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Solution

The fourth proportional to 14,316.60, 21,474 and 4,455.12 is: 6,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,316.60 : 21,474 = 4,455.12 : x
  2. Step 2: Convert to fraction form
    14,316.60/21,474 = 4,455.12/x
  3. Step 3: Cross multiply
    14,316.60x = 21,474 × 4,455.12
  4. Step 4: Simplify right side
    14,316.60x = 95,669,246.88
  5. Step 5: Solve for x
    x = 95,669,246.88/14,316.60
  6. Step 6: Final answer
    x = 6,682.40

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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.