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Finding the Fourth Proportional to 12,632.70, 18,949.08 and 12,328.22

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Solution

The fourth proportional to 12,632.70, 18,949.08 and 12,328.22 is: 18,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,632.70 : 18,949.08 = 12,328.22 : x
  2. Step 2: Convert to fraction form
    12,632.70/18,949.08 = 12,328.22/x
  3. Step 3: Cross multiply
    12,632.70x = 18,949.08 × 12,328.22
  4. Step 4: Simplify right side
    12,632.70x = 233,608,427.04
  5. Step 5: Solve for x
    x = 233,608,427.04/12,632.70
  6. Step 6: Final answer
    x = 18,492.36

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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.