Home / 20,723.38-31,087.06-8,240.63

Finding the Fourth Proportional to 20,723.38, 31,087.06 and 8,240.63

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Solution

The fourth proportional to 20,723.38, 31,087.06 and 8,240.63 is: 12,361.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.38 : 31,087.06 = 8,240.63 : x
  2. Step 2: Convert to fraction form
    20,723.38/31,087.06 = 8,240.63/x
  3. Step 3: Cross multiply
    20,723.38x = 31,087.06 × 8,240.63
  4. Step 4: Simplify right side
    20,723.38x = 256,176,803.81
  5. Step 5: Solve for x
    x = 256,176,803.81/20,723.38
  6. Step 6: Final answer
    x = 12,361.73

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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.