Home / 20,838.92-31,258.29-5,256.50

Finding the Fourth Proportional to 20,838.92, 31,258.29 and 5,256.50

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Solution

The fourth proportional to 20,838.92, 31,258.29 and 5,256.50 is: 7,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.92 : 31,258.29 = 5,256.50 : x
  2. Step 2: Convert to fraction form
    20,838.92/31,258.29 = 5,256.50/x
  3. Step 3: Cross multiply
    20,838.92x = 31,258.29 × 5,256.50
  4. Step 4: Simplify right side
    20,838.92x = 164,309,201.39
  5. Step 5: Solve for x
    x = 164,309,201.39/20,838.92
  6. Step 6: Final answer
    x = 7,884.73

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1.5x scale

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.