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Finding the Fourth Proportional to 18,606.65, 25,662.98 and 12,941.39

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Solution

The fourth proportional to 18,606.65, 25,662.98 and 12,941.39 is: 17,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.65 : 25,662.98 = 12,941.39 : x
  2. Step 2: Convert to fraction form
    18,606.65/25,662.98 = 12,941.39/x
  3. Step 3: Cross multiply
    18,606.65x = 25,662.98 × 12,941.39
  4. Step 4: Simplify right side
    18,606.65x = 332,114,729.25
  5. Step 5: Solve for x
    x = 332,114,729.25/18,606.65
  6. Step 6: Final answer
    x = 17,849.25

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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.