Home / 20,997.93-31,343.24-18,506.86

Finding the Fourth Proportional to 20,997.93, 31,343.24 and 18,506.86

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Solution

The fourth proportional to 20,997.93, 31,343.24 and 18,506.86 is: 27,624.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.93 : 31,343.24 = 18,506.86 : x
  2. Step 2: Convert to fraction form
    20,997.93/31,343.24 = 18,506.86/x
  3. Step 3: Cross multiply
    20,997.93x = 31,343.24 × 18,506.86
  4. Step 4: Simplify right side
    20,997.93x = 580,064,954.63
  5. Step 5: Solve for x
    x = 580,064,954.63/20,997.93
  6. Step 6: Final answer
    x = 27,624.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.