Home / 16,889.20-25,312.74-8,121.76

Finding the Fourth Proportional to 16,889.20, 25,312.74 and 8,121.76

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Solution

The fourth proportional to 16,889.20, 25,312.74 and 8,121.76 is: 12,172.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,889.20 : 25,312.74 = 8,121.76 : x
  2. Step 2: Convert to fraction form
    16,889.20/25,312.74 = 8,121.76/x
  3. Step 3: Cross multiply
    16,889.20x = 25,312.74 × 8,121.76
  4. Step 4: Simplify right side
    16,889.20x = 205,583,999.22
  5. Step 5: Solve for x
    x = 205,583,999.22/16,889.20
  6. Step 6: Final answer
    x = 12,172.51

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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.