Home / 20,953.53-31,431.92-8,473.05

Finding the Fourth Proportional to 20,953.53, 31,431.92 and 8,473.05

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Solution

The fourth proportional to 20,953.53, 31,431.92 and 8,473.05 is: 12,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.53 : 31,431.92 = 8,473.05 : x
  2. Step 2: Convert to fraction form
    20,953.53/31,431.92 = 8,473.05/x
  3. Step 3: Cross multiply
    20,953.53x = 31,431.92 × 8,473.05
  4. Step 4: Simplify right side
    20,953.53x = 266,324,187.39
  5. Step 5: Solve for x
    x = 266,324,187.39/20,953.53
  6. Step 6: Final answer
    x = 12,710.23

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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.