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Finding the Fourth Proportional to 18,409.08, 25,401.04 and 11,695.80

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Solution

The fourth proportional to 18,409.08, 25,401.04 and 11,695.80 is: 16,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.08 : 25,401.04 = 11,695.80 : x
  2. Step 2: Convert to fraction form
    18,409.08/25,401.04 = 11,695.80/x
  3. Step 3: Cross multiply
    18,409.08x = 25,401.04 × 11,695.80
  4. Step 4: Simplify right side
    18,409.08x = 297,085,483.63
  5. Step 5: Solve for x
    x = 297,085,483.63/18,409.08
  6. Step 6: Final answer
    x = 16,137.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.