Home / 28,015.26-42,022.78-8,292.21

Finding the Fourth Proportional to 28,015.26, 42,022.78 and 8,292.21

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Solution

The fourth proportional to 28,015.26, 42,022.78 and 8,292.21 is: 12,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.26 : 42,022.78 = 8,292.21 : x
  2. Step 2: Convert to fraction form
    28,015.26/42,022.78 = 8,292.21/x
  3. Step 3: Cross multiply
    28,015.26x = 42,022.78 × 8,292.21
  4. Step 4: Simplify right side
    28,015.26x = 348,461,716.54
  5. Step 5: Solve for x
    x = 348,461,716.54/28,015.26
  6. Step 6: Final answer
    x = 12,438.28

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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.