Home / 20,856.27-31,284.51-5,273.91

Finding the Fourth Proportional to 20,856.27, 31,284.51 and 5,273.91

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Solution

The fourth proportional to 20,856.27, 31,284.51 and 5,273.91 is: 7,910.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.27 : 31,284.51 = 5,273.91 : x
  2. Step 2: Convert to fraction form
    20,856.27/31,284.51 = 5,273.91/x
  3. Step 3: Cross multiply
    20,856.27x = 31,284.51 × 5,273.91
  4. Step 4: Simplify right side
    20,856.27x = 164,991,690.13
  5. Step 5: Solve for x
    x = 164,991,690.13/20,856.27
  6. Step 6: Final answer
    x = 7,910.89

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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.