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Finding the Fourth Proportional to 12,995.63, 19,493.28 and 3,134.83

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Solution

The fourth proportional to 12,995.63, 19,493.28 and 3,134.83 is: 4,702.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.63 : 19,493.28 = 3,134.83 : x
  2. Step 2: Convert to fraction form
    12,995.63/19,493.28 = 3,134.83/x
  3. Step 3: Cross multiply
    12,995.63x = 19,493.28 × 3,134.83
  4. Step 4: Simplify right side
    12,995.63x = 61,108,118.94
  5. Step 5: Solve for x
    x = 61,108,118.94/12,995.63
  6. Step 6: Final answer
    x = 4,702.21

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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.