Home / 20,708.73-31,064.12-5,919.81

Finding the Fourth Proportional to 20,708.73, 31,064.12 and 5,919.81

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Solution

The fourth proportional to 20,708.73, 31,064.12 and 5,919.81 is: 8,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.73 : 31,064.12 = 5,919.81 : x
  2. Step 2: Convert to fraction form
    20,708.73/31,064.12 = 5,919.81/x
  3. Step 3: Cross multiply
    20,708.73x = 31,064.12 × 5,919.81
  4. Step 4: Simplify right side
    20,708.73x = 183,893,658.62
  5. Step 5: Solve for x
    x = 183,893,658.62/20,708.73
  6. Step 6: Final answer
    x = 8,880.01

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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.