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Finding the Fourth Proportional to 18,606.57, 25,662.21 and 12,239.70

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Solution

The fourth proportional to 18,606.57, 25,662.21 and 12,239.70 is: 16,881.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.57 : 25,662.21 = 12,239.70 : x
  2. Step 2: Convert to fraction form
    18,606.57/25,662.21 = 12,239.70/x
  3. Step 3: Cross multiply
    18,606.57x = 25,662.21 × 12,239.70
  4. Step 4: Simplify right side
    18,606.57x = 314,097,751.74
  5. Step 5: Solve for x
    x = 314,097,751.74/18,606.57
  6. Step 6: Final answer
    x = 16,881.01

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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.