Home / 12,646.28-18,969.42-3,412.28

Finding the Fourth Proportional to 12,646.28, 18,969.42 and 3,412.28

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Solution

The fourth proportional to 12,646.28, 18,969.42 and 3,412.28 is: 5,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,646.28 : 18,969.42 = 3,412.28 : x
  2. Step 2: Convert to fraction form
    12,646.28/18,969.42 = 3,412.28/x
  3. Step 3: Cross multiply
    12,646.28x = 18,969.42 × 3,412.28
  4. Step 4: Simplify right side
    12,646.28x = 64,728,972.48
  5. Step 5: Solve for x
    x = 64,728,972.48/12,646.28
  6. Step 6: Final answer
    x = 5,118.42

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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.