Home / 12,702.98-19,056.28-3,938.64

Finding the Fourth Proportional to 12,702.98, 19,056.28 and 3,938.64

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Solution

The fourth proportional to 12,702.98, 19,056.28 and 3,938.64 is: 5,908.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.98 : 19,056.28 = 3,938.64 : x
  2. Step 2: Convert to fraction form
    12,702.98/19,056.28 = 3,938.64/x
  3. Step 3: Cross multiply
    12,702.98x = 19,056.28 × 3,938.64
  4. Step 4: Simplify right side
    12,702.98x = 75,055,826.66
  5. Step 5: Solve for x
    x = 75,055,826.66/12,702.98
  6. Step 6: Final answer
    x = 5,908.52

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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.