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Finding the Fourth Proportional to 28,986.36, 43,460.82 and 9,258.36

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Solution

The fourth proportional to 28,986.36, 43,460.82 and 9,258.36 is: 13,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.36 : 43,460.82 = 9,258.36 : x
  2. Step 2: Convert to fraction form
    28,986.36/43,460.82 = 9,258.36/x
  3. Step 3: Cross multiply
    28,986.36x = 43,460.82 × 9,258.36
  4. Step 4: Simplify right side
    28,986.36x = 402,375,917.46
  5. Step 5: Solve for x
    x = 402,375,917.46/28,986.36
  6. Step 6: Final answer
    x = 13,881.56

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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.