Home / 28,860.16-43,287.80-9,135.84

Finding the Fourth Proportional to 28,860.16, 43,287.80 and 9,135.84

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Solution

The fourth proportional to 28,860.16, 43,287.80 and 9,135.84 is: 13,702.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.16 : 43,287.80 = 9,135.84 : x
  2. Step 2: Convert to fraction form
    28,860.16/43,287.80 = 9,135.84/x
  3. Step 3: Cross multiply
    28,860.16x = 43,287.80 × 9,135.84
  4. Step 4: Simplify right side
    28,860.16x = 395,470,414.75
  5. Step 5: Solve for x
    x = 395,470,414.75/28,860.16
  6. Step 6: Final answer
    x = 13,702.99

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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.