Home / 20,845.92-31,272.43-7,698.36

Finding the Fourth Proportional to 20,845.92, 31,272.43 and 7,698.36

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Solution

The fourth proportional to 20,845.92, 31,272.43 and 7,698.36 is: 11,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.92 : 31,272.43 = 7,698.36 : x
  2. Step 2: Convert to fraction form
    20,845.92/31,272.43 = 7,698.36/x
  3. Step 3: Cross multiply
    20,845.92x = 31,272.43 × 7,698.36
  4. Step 4: Simplify right side
    20,845.92x = 240,746,424.21
  5. Step 5: Solve for x
    x = 240,746,424.21/20,845.92
  6. Step 6: Final answer
    x = 11,548.85

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1.5x scale

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.