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Finding the Fourth Proportional to 20,722.62, 28,601.04 and 19,456.62

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Solution

The fourth proportional to 20,722.62, 28,601.04 and 19,456.62 is: 26,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.62 : 28,601.04 = 19,456.62 : x
  2. Step 2: Convert to fraction form
    20,722.62/28,601.04 = 19,456.62/x
  3. Step 3: Cross multiply
    20,722.62x = 28,601.04 × 19,456.62
  4. Step 4: Simplify right side
    20,722.62x = 556,479,566.88
  5. Step 5: Solve for x
    x = 556,479,566.88/20,722.62
  6. Step 6: Final answer
    x = 26,853.73

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1.5x scale

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.