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Finding the Fourth Proportional to 14,393.91, 21,559.61 and 6,982.79

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Solution

The fourth proportional to 14,393.91, 21,559.61 and 6,982.79 is: 10,459.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,393.91 : 21,559.61 = 6,982.79 : x
  2. Step 2: Convert to fraction form
    14,393.91/21,559.61 = 6,982.79/x
  3. Step 3: Cross multiply
    14,393.91x = 21,559.61 × 6,982.79
  4. Step 4: Simplify right side
    14,393.91x = 150,546,138.77
  5. Step 5: Solve for x
    x = 150,546,138.77/14,393.91
  6. Step 6: Final answer
    x = 10,459.02

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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.