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Finding the Fourth Proportional to 12,643.07, 18,964.95 and 3,282.88

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Solution

The fourth proportional to 12,643.07, 18,964.95 and 3,282.88 is: 4,924.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.07 : 18,964.95 = 3,282.88 : x
  2. Step 2: Convert to fraction form
    12,643.07/18,964.95 = 3,282.88/x
  3. Step 3: Cross multiply
    12,643.07x = 18,964.95 × 3,282.88
  4. Step 4: Simplify right side
    12,643.07x = 62,259,649.36
  5. Step 5: Solve for x
    x = 62,259,649.36/12,643.07
  6. Step 6: Final answer
    x = 4,924.41

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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.