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Finding the Fourth Proportional to 28,907.81, 43,364.60 and 7,848.19

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Solution

The fourth proportional to 28,907.81, 43,364.60 and 7,848.19 is: 11,773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.81 : 43,364.60 = 7,848.19 : x
  2. Step 2: Convert to fraction form
    28,907.81/43,364.60 = 7,848.19/x
  3. Step 3: Cross multiply
    28,907.81x = 43,364.60 × 7,848.19
  4. Step 4: Simplify right side
    28,907.81x = 340,333,620.07
  5. Step 5: Solve for x
    x = 340,333,620.07/28,907.81
  6. Step 6: Final answer
    x = 11,773.07

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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.