Home / 20,698.20-31,043.52-5,907.60

Finding the Fourth Proportional to 20,698.20, 31,043.52 and 5,907.60

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Solution

The fourth proportional to 20,698.20, 31,043.52 and 5,907.60 is: 8,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.20 : 31,043.52 = 5,907.60 : x
  2. Step 2: Convert to fraction form
    20,698.20/31,043.52 = 5,907.60/x
  3. Step 3: Cross multiply
    20,698.20x = 31,043.52 × 5,907.60
  4. Step 4: Simplify right side
    20,698.20x = 183,392,698.75
  5. Step 5: Solve for x
    x = 183,392,698.75/20,698.20
  6. Step 6: Final answer
    x = 8,860.32

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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.