Home / 28,360.88-42,531.38-8,365.05

Finding the Fourth Proportional to 28,360.88, 42,531.38 and 8,365.05

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Solution

The fourth proportional to 28,360.88, 42,531.38 and 8,365.05 is: 12,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.88 : 42,531.38 = 8,365.05 : x
  2. Step 2: Convert to fraction form
    28,360.88/42,531.38 = 8,365.05/x
  3. Step 3: Cross multiply
    28,360.88x = 42,531.38 × 8,365.05
  4. Step 4: Simplify right side
    28,360.88x = 355,777,078.44
  5. Step 5: Solve for x
    x = 355,777,078.44/28,360.88
  6. Step 6: Final answer
    x = 12,544.64

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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.