Home / 20,688.75-31,037.99-6,837.75

Finding the Fourth Proportional to 20,688.75, 31,037.99 and 6,837.75

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Solution

The fourth proportional to 20,688.75, 31,037.99 and 6,837.75 is: 10,258.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.75 : 31,037.99 = 6,837.75 : x
  2. Step 2: Convert to fraction form
    20,688.75/31,037.99 = 6,837.75/x
  3. Step 3: Cross multiply
    20,688.75x = 31,037.99 × 6,837.75
  4. Step 4: Simplify right side
    20,688.75x = 212,229,981.93
  5. Step 5: Solve for x
    x = 212,229,981.93/20,688.75
  6. Step 6: Final answer
    x = 10,258.23

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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.