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Finding the Fourth Proportional to 28,968, 39,976.02 and 16,395.36

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Solution

The fourth proportional to 28,968, 39,976.02 and 16,395.36 is: 22,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968 : 39,976.02 = 16,395.36 : x
  2. Step 2: Convert to fraction form
    28,968/39,976.02 = 16,395.36/x
  3. Step 3: Cross multiply
    28,968x = 39,976.02 × 16,395.36
  4. Step 4: Simplify right side
    28,968x = 655,421,239.27
  5. Step 5: Solve for x
    x = 655,421,239.27/28,968
  6. Step 6: Final answer
    x = 22,625.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.