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Finding the Fourth Proportional to 12,963.94, 19,445.91 and 3,729.94

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Solution

The fourth proportional to 12,963.94, 19,445.91 and 3,729.94 is: 5,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.94 : 19,445.91 = 3,729.94 : x
  2. Step 2: Convert to fraction form
    12,963.94/19,445.91 = 3,729.94/x
  3. Step 3: Cross multiply
    12,963.94x = 19,445.91 × 3,729.94
  4. Step 4: Simplify right side
    12,963.94x = 72,532,014.94
  5. Step 5: Solve for x
    x = 72,532,014.94/12,963.94
  6. Step 6: Final answer
    x = 5,594.91

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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.