Home / 28,905.14-43,357.56-9,185.20

Finding the Fourth Proportional to 28,905.14, 43,357.56 and 9,185.20

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Solution

The fourth proportional to 28,905.14, 43,357.56 and 9,185.20 is: 13,777.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.14 : 43,357.56 = 9,185.20 : x
  2. Step 2: Convert to fraction form
    28,905.14/43,357.56 = 9,185.20/x
  3. Step 3: Cross multiply
    28,905.14x = 43,357.56 × 9,185.20
  4. Step 4: Simplify right side
    28,905.14x = 398,247,860.11
  5. Step 5: Solve for x
    x = 398,247,860.11/28,905.14
  6. Step 6: Final answer
    x = 13,777.75

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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.