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Finding the Fourth Proportional to 28,370.44, 42,558.48 and 10,855

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Solution

The fourth proportional to 28,370.44, 42,558.48 and 10,855 is: 16,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.44 : 42,558.48 = 10,855 : x
  2. Step 2: Convert to fraction form
    28,370.44/42,558.48 = 10,855/x
  3. Step 3: Cross multiply
    28,370.44x = 42,558.48 × 10,855
  4. Step 4: Simplify right side
    28,370.44x = 461,972,300.40
  5. Step 5: Solve for x
    x = 461,972,300.40/28,370.44
  6. Step 6: Final answer
    x = 16,283.58

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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.