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Finding the Fourth Proportional to 14,199.12, 21,308.16 and 4,965.12

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Solution

The fourth proportional to 14,199.12, 21,308.16 and 4,965.12 is: 7,450.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,199.12 : 21,308.16 = 4,965.12 : x
  2. Step 2: Convert to fraction form
    14,199.12/21,308.16 = 4,965.12/x
  3. Step 3: Cross multiply
    14,199.12x = 21,308.16 × 4,965.12
  4. Step 4: Simplify right side
    14,199.12x = 105,797,571.38
  5. Step 5: Solve for x
    x = 105,797,571.38/14,199.12
  6. Step 6: Final answer
    x = 7,450.99

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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.