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Finding the Fourth Proportional to 28,648.66, 42,975.27 and 10,887.82

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Solution

The fourth proportional to 28,648.66, 42,975.27 and 10,887.82 is: 16,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.66 : 42,975.27 = 10,887.82 : x
  2. Step 2: Convert to fraction form
    28,648.66/42,975.27 = 10,887.82/x
  3. Step 3: Cross multiply
    28,648.66x = 42,975.27 × 10,887.82
  4. Step 4: Simplify right side
    28,648.66x = 467,907,004.21
  5. Step 5: Solve for x
    x = 467,907,004.21/28,648.66
  6. Step 6: Final answer
    x = 16,332.60

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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.