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Finding the Fourth Proportional to 28,886.50, 43,349.19 and 10,418.50

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Solution

The fourth proportional to 28,886.50, 43,349.19 and 10,418.50 is: 15,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.50 : 43,349.19 = 10,418.50 : x
  2. Step 2: Convert to fraction form
    28,886.50/43,349.19 = 10,418.50/x
  3. Step 3: Cross multiply
    28,886.50x = 43,349.19 × 10,418.50
  4. Step 4: Simplify right side
    28,886.50x = 451,633,536.02
  5. Step 5: Solve for x
    x = 451,633,536.02/28,886.50
  6. Step 6: Final answer
    x = 15,634.76

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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.