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Finding the Fourth Proportional to 12,903.56, 19,358.60 and 3,669.56

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Solution

The fourth proportional to 12,903.56, 19,358.60 and 3,669.56 is: 5,505.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.56 : 19,358.60 = 3,669.56 : x
  2. Step 2: Convert to fraction form
    12,903.56/19,358.60 = 3,669.56/x
  3. Step 3: Cross multiply
    12,903.56x = 19,358.60 × 3,669.56
  4. Step 4: Simplify right side
    12,903.56x = 71,037,544.22
  5. Step 5: Solve for x
    x = 71,037,544.22/12,903.56
  6. Step 6: Final answer
    x = 5,505.27

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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.