Home / 20,432.62-30,627.09-13,409.98

Finding the Fourth Proportional to 20,432.62, 30,627.09 and 13,409.98

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Solution

The fourth proportional to 20,432.62, 30,627.09 and 13,409.98 is: 20,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.62 : 30,627.09 = 13,409.98 : x
  2. Step 2: Convert to fraction form
    20,432.62/30,627.09 = 13,409.98/x
  3. Step 3: Cross multiply
    20,432.62x = 30,627.09 × 13,409.98
  4. Step 4: Simplify right side
    20,432.62x = 410,708,664.36
  5. Step 5: Solve for x
    x = 410,708,664.36/20,432.62
  6. Step 6: Final answer
    x = 20,100.64

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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.