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Finding the Fourth Proportional to 14,212.62, 21,305.16 and 7,975.62

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Solution

The fourth proportional to 14,212.62, 21,305.16 and 7,975.62 is: 11,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,212.62 : 21,305.16 = 7,975.62 : x
  2. Step 2: Convert to fraction form
    14,212.62/21,305.16 = 7,975.62/x
  3. Step 3: Cross multiply
    14,212.62x = 21,305.16 × 7,975.62
  4. Step 4: Simplify right side
    14,212.62x = 169,921,860.20
  5. Step 5: Solve for x
    x = 169,921,860.20/14,212.62
  6. Step 6: Final answer
    x = 11,955.70

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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.