Home / 12,019.40-18,016.32-7,091.36

Finding the Fourth Proportional to 12,019.40, 18,016.32 and 7,091.36

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Solution

The fourth proportional to 12,019.40, 18,016.32 and 7,091.36 is: 10,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,019.40 : 18,016.32 = 7,091.36 : x
  2. Step 2: Convert to fraction form
    12,019.40/18,016.32 = 7,091.36/x
  3. Step 3: Cross multiply
    12,019.40x = 18,016.32 × 7,091.36
  4. Step 4: Simplify right side
    12,019.40x = 127,760,211.00
  5. Step 5: Solve for x
    x = 127,760,211.00/12,019.40
  6. Step 6: Final answer
    x = 10,629.50

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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.