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Finding the Fourth Proportional to 14,309.28, 21,468.78 and 6,914.79

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Solution

The fourth proportional to 14,309.28, 21,468.78 and 6,914.79 is: 10,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,309.28 : 21,468.78 = 6,914.79 : x
  2. Step 2: Convert to fraction form
    14,309.28/21,468.78 = 6,914.79/x
  3. Step 3: Cross multiply
    14,309.28x = 21,468.78 × 6,914.79
  4. Step 4: Simplify right side
    14,309.28x = 148,452,105.26
  5. Step 5: Solve for x
    x = 148,452,105.26/14,309.28
  6. Step 6: Final answer
    x = 10,374.53

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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.