Home / 12,961.60-19,440.48-4,197.28

Finding the Fourth Proportional to 12,961.60, 19,440.48 and 4,197.28

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Solution

The fourth proportional to 12,961.60, 19,440.48 and 4,197.28 is: 6,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.60 : 19,440.48 = 4,197.28 : x
  2. Step 2: Convert to fraction form
    12,961.60/19,440.48 = 4,197.28/x
  3. Step 3: Cross multiply
    12,961.60x = 19,440.48 × 4,197.28
  4. Step 4: Simplify right side
    12,961.60x = 81,597,137.89
  5. Step 5: Solve for x
    x = 81,597,137.89/12,961.60
  6. Step 6: Final answer
    x = 6,295.30

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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.