Home / 16,971.54-25,431.31-8,639.07

Finding the Fourth Proportional to 16,971.54, 25,431.31 and 8,639.07

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Solution

The fourth proportional to 16,971.54, 25,431.31 and 8,639.07 is: 12,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,971.54 : 25,431.31 = 8,639.07 : x
  2. Step 2: Convert to fraction form
    16,971.54/25,431.31 = 8,639.07/x
  3. Step 3: Cross multiply
    16,971.54x = 25,431.31 × 8,639.07
  4. Step 4: Simplify right side
    16,971.54x = 219,702,867.28
  5. Step 5: Solve for x
    x = 219,702,867.28/16,971.54
  6. Step 6: Final answer
    x = 12,945.37

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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.