Home / 21,276.92-31,855.37-11,258.97

Finding the Fourth Proportional to 21,276.92, 31,855.37 and 11,258.97

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Solution

The fourth proportional to 21,276.92, 31,855.37 and 11,258.97 is: 16,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.92 : 31,855.37 = 11,258.97 : x
  2. Step 2: Convert to fraction form
    21,276.92/31,855.37 = 11,258.97/x
  3. Step 3: Cross multiply
    21,276.92x = 31,855.37 × 11,258.97
  4. Step 4: Simplify right side
    21,276.92x = 358,658,598.87
  5. Step 5: Solve for x
    x = 358,658,598.87/21,276.92
  6. Step 6: Final answer
    x = 16,856.70

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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.