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Finding the Fourth Proportional to 28,751.63, 43,083.56 and 19,356.95

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Solution

The fourth proportional to 28,751.63, 43,083.56 and 19,356.95 is: 29,005.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.63 : 43,083.56 = 19,356.95 : x
  2. Step 2: Convert to fraction form
    28,751.63/43,083.56 = 19,356.95/x
  3. Step 3: Cross multiply
    28,751.63x = 43,083.56 × 19,356.95
  4. Step 4: Simplify right side
    28,751.63x = 833,966,316.74
  5. Step 5: Solve for x
    x = 833,966,316.74/28,751.63
  6. Step 6: Final answer
    x = 29,005.88

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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.