Home / 20,389.84-30,584.80-16,422.52

Finding the Fourth Proportional to 20,389.84, 30,584.80 and 16,422.52

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Solution

The fourth proportional to 20,389.84, 30,584.80 and 16,422.52 is: 24,633.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.84 : 30,584.80 = 16,422.52 : x
  2. Step 2: Convert to fraction form
    20,389.84/30,584.80 = 16,422.52/x
  3. Step 3: Cross multiply
    20,389.84x = 30,584.80 × 16,422.52
  4. Step 4: Simplify right side
    20,389.84x = 502,279,489.70
  5. Step 5: Solve for x
    x = 502,279,489.70/20,389.84
  6. Step 6: Final answer
    x = 24,633.81

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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.