Home / 16,990.54-25,485.78-11,145.76

Finding the Fourth Proportional to 16,990.54, 25,485.78 and 11,145.76

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Solution

The fourth proportional to 16,990.54, 25,485.78 and 11,145.76 is: 16,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.54 : 25,485.78 = 11,145.76 : x
  2. Step 2: Convert to fraction form
    16,990.54/25,485.78 = 11,145.76/x
  3. Step 3: Cross multiply
    16,990.54x = 25,485.78 × 11,145.76
  4. Step 4: Simplify right side
    16,990.54x = 284,058,387.29
  5. Step 5: Solve for x
    x = 284,058,387.29/16,990.54
  6. Step 6: Final answer
    x = 16,718.62

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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.