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Finding the Fourth Proportional to 18,222.84, 25,148.68 and 13,738.68

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Solution

The fourth proportional to 18,222.84, 25,148.68 and 13,738.68 is: 18,960.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.84 : 25,148.68 = 13,738.68 : x
  2. Step 2: Convert to fraction form
    18,222.84/25,148.68 = 13,738.68/x
  3. Step 3: Cross multiply
    18,222.84x = 25,148.68 × 13,738.68
  4. Step 4: Simplify right side
    18,222.84x = 345,509,632.60
  5. Step 5: Solve for x
    x = 345,509,632.60/18,222.84
  6. Step 6: Final answer
    x = 18,960.25

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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.