Home / 28,795-43,129.86-13,972.64

Finding the Fourth Proportional to 28,795, 43,129.86 and 13,972.64

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Solution

The fourth proportional to 28,795, 43,129.86 and 13,972.64 is: 20,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,795 : 43,129.86 = 13,972.64 : x
  2. Step 2: Convert to fraction form
    28,795/43,129.86 = 13,972.64/x
  3. Step 3: Cross multiply
    28,795x = 43,129.86 × 13,972.64
  4. Step 4: Simplify right side
    28,795x = 602,638,007.03
  5. Step 5: Solve for x
    x = 602,638,007.03/28,795
  6. Step 6: Final answer
    x = 20,928.56

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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.