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Finding the Fourth Proportional to 14,420.08, 21,630.12 and 6,212.08

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Solution

The fourth proportional to 14,420.08, 21,630.12 and 6,212.08 is: 9,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.08 : 21,630.12 = 6,212.08 : x
  2. Step 2: Convert to fraction form
    14,420.08/21,630.12 = 6,212.08/x
  3. Step 3: Cross multiply
    14,420.08x = 21,630.12 × 6,212.08
  4. Step 4: Simplify right side
    14,420.08x = 134,368,035.85
  5. Step 5: Solve for x
    x = 134,368,035.85/14,420.08
  6. Step 6: Final answer
    x = 9,318.12

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1.5x scale

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.