Home / 20,717.70-31,087.92-9,629.64

Finding the Fourth Proportional to 20,717.70, 31,087.92 and 9,629.64

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Solution

The fourth proportional to 20,717.70, 31,087.92 and 9,629.64 is: 14,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.70 : 31,087.92 = 9,629.64 : x
  2. Step 2: Convert to fraction form
    20,717.70/31,087.92 = 9,629.64/x
  3. Step 3: Cross multiply
    20,717.70x = 31,087.92 × 9,629.64
  4. Step 4: Simplify right side
    20,717.70x = 299,365,477.95
  5. Step 5: Solve for x
    x = 299,365,477.95/20,717.70
  6. Step 6: Final answer
    x = 14,449.74

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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.