Home / 12,739.32-19,111.08-3,972.48

Finding the Fourth Proportional to 12,739.32, 19,111.08 and 3,972.48

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Solution

The fourth proportional to 12,739.32, 19,111.08 and 3,972.48 is: 5,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.32 : 19,111.08 = 3,972.48 : x
  2. Step 2: Convert to fraction form
    12,739.32/19,111.08 = 3,972.48/x
  3. Step 3: Cross multiply
    12,739.32x = 19,111.08 × 3,972.48
  4. Step 4: Simplify right side
    12,739.32x = 75,918,383.08
  5. Step 5: Solve for x
    x = 75,918,383.08/12,739.32
  6. Step 6: Final answer
    x = 5,959.37

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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.