Home / 20,910.24-31,358.88-7,056

Finding the Fourth Proportional to 20,910.24, 31,358.88 and 7,056

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Solution

The fourth proportional to 20,910.24, 31,358.88 and 7,056 is: 10,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.24 : 31,358.88 = 7,056 : x
  2. Step 2: Convert to fraction form
    20,910.24/31,358.88 = 7,056/x
  3. Step 3: Cross multiply
    20,910.24x = 31,358.88 × 7,056
  4. Step 4: Simplify right side
    20,910.24x = 221,268,257.28
  5. Step 5: Solve for x
    x = 221,268,257.28/20,910.24
  6. Step 6: Final answer
    x = 10,581.81

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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.