Home / 20,847.96-31,286.52-9,169.36

Finding the Fourth Proportional to 20,847.96, 31,286.52 and 9,169.36

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Solution

The fourth proportional to 20,847.96, 31,286.52 and 9,169.36 is: 13,760.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.96 : 31,286.52 = 9,169.36 : x
  2. Step 2: Convert to fraction form
    20,847.96/31,286.52 = 9,169.36/x
  3. Step 3: Cross multiply
    20,847.96x = 31,286.52 × 9,169.36
  4. Step 4: Simplify right side
    20,847.96x = 286,877,365.03
  5. Step 5: Solve for x
    x = 286,877,365.03/20,847.96
  6. Step 6: Final answer
    x = 13,760.45

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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.