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Finding the Fourth Proportional to 28,858.69, 43,208.31 and 14,788.42

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Solution

The fourth proportional to 28,858.69, 43,208.31 and 14,788.42 is: 22,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.69 : 43,208.31 = 14,788.42 : x
  2. Step 2: Convert to fraction form
    28,858.69/43,208.31 = 14,788.42/x
  3. Step 3: Cross multiply
    28,858.69x = 43,208.31 × 14,788.42
  4. Step 4: Simplify right side
    28,858.69x = 638,982,635.77
  5. Step 5: Solve for x
    x = 638,982,635.77/28,858.69
  6. Step 6: Final answer
    x = 22,141.78

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1.5x scale

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.