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Finding the Fourth Proportional to 28,838, 43,264 and 14,043.56

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Solution

The fourth proportional to 28,838, 43,264 and 14,043.56 is: 21,068.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838 : 43,264 = 14,043.56 : x
  2. Step 2: Convert to fraction form
    28,838/43,264 = 14,043.56/x
  3. Step 3: Cross multiply
    28,838x = 43,264 × 14,043.56
  4. Step 4: Simplify right side
    28,838x = 607,580,579.84
  5. Step 5: Solve for x
    x = 607,580,579.84/28,838
  6. Step 6: Final answer
    x = 21,068.75

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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.