Home / 20,196.60-30,295.32-5,405.50

Finding the Fourth Proportional to 20,196.60, 30,295.32 and 5,405.50

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Solution

The fourth proportional to 20,196.60, 30,295.32 and 5,405.50 is: 8,108.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.60 : 30,295.32 = 5,405.50 : x
  2. Step 2: Convert to fraction form
    20,196.60/30,295.32 = 5,405.50/x
  3. Step 3: Cross multiply
    20,196.60x = 30,295.32 × 5,405.50
  4. Step 4: Simplify right side
    20,196.60x = 163,761,352.26
  5. Step 5: Solve for x
    x = 163,761,352.26/20,196.60
  6. Step 6: Final answer
    x = 8,108.36

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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.