Home / 19,015.20-28,522.80-4,975.20

Finding the Fourth Proportional to 19,015.20, 28,522.80 and 4,975.20

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Solution

The fourth proportional to 19,015.20, 28,522.80 and 4,975.20 is: 7,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,015.20 : 28,522.80 = 4,975.20 : x
  2. Step 2: Convert to fraction form
    19,015.20/28,522.80 = 4,975.20/x
  3. Step 3: Cross multiply
    19,015.20x = 28,522.80 × 4,975.20
  4. Step 4: Simplify right side
    19,015.20x = 141,906,634.56
  5. Step 5: Solve for x
    x = 141,906,634.56/19,015.20
  6. Step 6: Final answer
    x = 7,462.80

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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.