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Finding the Fourth Proportional to 12,674.63, 18,999.18 and 5,283.18

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Solution

The fourth proportional to 12,674.63, 18,999.18 and 5,283.18 is: 7,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.63 : 18,999.18 = 5,283.18 : x
  2. Step 2: Convert to fraction form
    12,674.63/18,999.18 = 5,283.18/x
  3. Step 3: Cross multiply
    12,674.63x = 18,999.18 × 5,283.18
  4. Step 4: Simplify right side
    12,674.63x = 100,376,087.79
  5. Step 5: Solve for x
    x = 100,376,087.79/12,674.63
  6. Step 6: Final answer
    x = 7,919.45

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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.