Home / 12,872.39-19,308.01-3,512.38

Finding the Fourth Proportional to 12,872.39, 19,308.01 and 3,512.38

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Solution

The fourth proportional to 12,872.39, 19,308.01 and 3,512.38 is: 5,268.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.39 : 19,308.01 = 3,512.38 : x
  2. Step 2: Convert to fraction form
    12,872.39/19,308.01 = 3,512.38/x
  3. Step 3: Cross multiply
    12,872.39x = 19,308.01 × 3,512.38
  4. Step 4: Simplify right side
    12,872.39x = 67,817,008.23
  5. Step 5: Solve for x
    x = 67,817,008.23/12,872.39
  6. Step 6: Final answer
    x = 5,268.41

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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.