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Finding the Fourth Proportional to 21,773.70, 30,048.24 and 12,342.84

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Solution

The fourth proportional to 21,773.70, 30,048.24 and 12,342.84 is: 17,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,773.70 : 30,048.24 = 12,342.84 : x
  2. Step 2: Convert to fraction form
    21,773.70/30,048.24 = 12,342.84/x
  3. Step 3: Cross multiply
    21,773.70x = 30,048.24 × 12,342.84
  4. Step 4: Simplify right side
    21,773.70x = 370,880,618.60
  5. Step 5: Solve for x
    x = 370,880,618.60/21,773.70
  6. Step 6: Final answer
    x = 17,033.42

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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.