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Finding the Fourth Proportional to 28,603.84, 39,466.52 and 16,660

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Solution

The fourth proportional to 28,603.84, 39,466.52 and 16,660 is: 22,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.84 : 39,466.52 = 16,660 : x
  2. Step 2: Convert to fraction form
    28,603.84/39,466.52 = 16,660/x
  3. Step 3: Cross multiply
    28,603.84x = 39,466.52 × 16,660
  4. Step 4: Simplify right side
    28,603.84x = 657,512,223.20
  5. Step 5: Solve for x
    x = 657,512,223.20/28,603.84
  6. Step 6: Final answer
    x = 22,986.85

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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.