Home / 20,904.67-31,358.76-5,322.25

Finding the Fourth Proportional to 20,904.67, 31,358.76 and 5,322.25

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Solution

The fourth proportional to 20,904.67, 31,358.76 and 5,322.25 is: 7,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.67 : 31,358.76 = 5,322.25 : x
  2. Step 2: Convert to fraction form
    20,904.67/31,358.76 = 5,322.25/x
  3. Step 3: Cross multiply
    20,904.67x = 31,358.76 × 5,322.25
  4. Step 4: Simplify right side
    20,904.67x = 166,899,160.41
  5. Step 5: Solve for x
    x = 166,899,160.41/20,904.67
  6. Step 6: Final answer
    x = 7,983.82

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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.