Home / 20,381.88-30,565.06-8,536.44

Finding the Fourth Proportional to 20,381.88, 30,565.06 and 8,536.44

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Solution

The fourth proportional to 20,381.88, 30,565.06 and 8,536.44 is: 12,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.88 : 30,565.06 = 8,536.44 : x
  2. Step 2: Convert to fraction form
    20,381.88/30,565.06 = 8,536.44/x
  3. Step 3: Cross multiply
    20,381.88x = 30,565.06 × 8,536.44
  4. Step 4: Simplify right side
    20,381.88x = 260,916,800.79
  5. Step 5: Solve for x
    x = 260,916,800.79/20,381.88
  6. Step 6: Final answer
    x = 12,801.41

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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.