Home / 20,908.50-28,853.01-11,347.98

Finding the Fourth Proportional to 20,908.50, 28,853.01 and 11,347.98

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Solution

The fourth proportional to 20,908.50, 28,853.01 and 11,347.98 is: 15,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.50 : 28,853.01 = 11,347.98 : x
  2. Step 2: Convert to fraction form
    20,908.50/28,853.01 = 11,347.98/x
  3. Step 3: Cross multiply
    20,908.50x = 28,853.01 × 11,347.98
  4. Step 4: Simplify right side
    20,908.50x = 327,423,380.42
  5. Step 5: Solve for x
    x = 327,423,380.42/20,908.50
  6. Step 6: Final answer
    x = 15,659.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.