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Finding the Fourth Proportional to 16,885.70, 25,328.55 and 8,137.70

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Solution

The fourth proportional to 16,885.70, 25,328.55 and 8,137.70 is: 12,206.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,885.70 : 25,328.55 = 8,137.70 : x
  2. Step 2: Convert to fraction form
    16,885.70/25,328.55 = 8,137.70/x
  3. Step 3: Cross multiply
    16,885.70x = 25,328.55 × 8,137.70
  4. Step 4: Simplify right side
    16,885.70x = 206,116,141.34
  5. Step 5: Solve for x
    x = 206,116,141.34/16,885.70
  6. Step 6: Final answer
    x = 12,206.55

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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.