Home / 19,015.51-28,519.62-7,327.21

Finding the Fourth Proportional to 19,015.51, 28,519.62 and 7,327.21

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Solution

The fourth proportional to 19,015.51, 28,519.62 and 7,327.21 is: 10,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.51 : 28,519.62 = 7,327.21 : x
  2. Step 2: Convert to fraction form
    19,015.51/28,519.62 = 7,327.21/x
  3. Step 3: Cross multiply
    19,015.51x = 28,519.62 × 7,327.21
  4. Step 4: Simplify right side
    19,015.51x = 208,969,244.86
  5. Step 5: Solve for x
    x = 208,969,244.86/19,015.51
  6. Step 6: Final answer
    x = 10,989.41

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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.