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Finding the Fourth Proportional to 12,965.04, 19,447.20 and 4,197.60

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Solution

The fourth proportional to 12,965.04, 19,447.20 and 4,197.60 is: 6,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.04 : 19,447.20 = 4,197.60 : x
  2. Step 2: Convert to fraction form
    12,965.04/19,447.20 = 4,197.60/x
  3. Step 3: Cross multiply
    12,965.04x = 19,447.20 × 4,197.60
  4. Step 4: Simplify right side
    12,965.04x = 81,631,566.72
  5. Step 5: Solve for x
    x = 81,631,566.72/12,965.04
  6. Step 6: Final answer
    x = 6,296.28

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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.