Home / 19,015.51-28,530.57-7,919.23

Finding the Fourth Proportional to 19,015.51, 28,530.57 and 7,919.23

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Solution

The fourth proportional to 19,015.51, 28,530.57 and 7,919.23 is: 11,881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.51 : 28,530.57 = 7,919.23 : x
  2. Step 2: Convert to fraction form
    19,015.51/28,530.57 = 7,919.23/x
  3. Step 3: Cross multiply
    19,015.51x = 28,530.57 × 7,919.23
  4. Step 4: Simplify right side
    19,015.51x = 225,940,145.86
  5. Step 5: Solve for x
    x = 225,940,145.86/19,015.51
  6. Step 6: Final answer
    x = 11,881.89

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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.