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Finding the Fourth Proportional to 21,953.54, 30,295.89 and 12,017.54

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Solution

The fourth proportional to 21,953.54, 30,295.89 and 12,017.54 is: 16,584.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.54 : 30,295.89 = 12,017.54 : x
  2. Step 2: Convert to fraction form
    21,953.54/30,295.89 = 12,017.54/x
  3. Step 3: Cross multiply
    21,953.54x = 30,295.89 × 12,017.54
  4. Step 4: Simplify right side
    21,953.54x = 364,082,069.91
  5. Step 5: Solve for x
    x = 364,082,069.91/21,953.54
  6. Step 6: Final answer
    x = 16,584.21

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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.