Home / 28,014.26-42,021.28-8,291.21

Finding the Fourth Proportional to 28,014.26, 42,021.28 and 8,291.21

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Solution

The fourth proportional to 28,014.26, 42,021.28 and 8,291.21 is: 12,436.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.26 : 42,021.28 = 8,291.21 : x
  2. Step 2: Convert to fraction form
    28,014.26/42,021.28 = 8,291.21/x
  3. Step 3: Cross multiply
    28,014.26x = 42,021.28 × 8,291.21
  4. Step 4: Simplify right side
    28,014.26x = 348,407,293.58
  5. Step 5: Solve for x
    x = 348,407,293.58/28,014.26
  6. Step 6: Final answer
    x = 12,436.79

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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.