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Finding the Fourth Proportional to 18,702.10, 28,058.97 and 5,554.54

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Solution

The fourth proportional to 18,702.10, 28,058.97 and 5,554.54 is: 8,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.10 : 28,058.97 = 5,554.54 : x
  2. Step 2: Convert to fraction form
    18,702.10/28,058.97 = 5,554.54/x
  3. Step 3: Cross multiply
    18,702.10x = 28,058.97 × 5,554.54
  4. Step 4: Simplify right side
    18,702.10x = 155,854,671.22
  5. Step 5: Solve for x
    x = 155,854,671.22/18,702.10
  6. Step 6: Final answer
    x = 8,333.54

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1.5x scale

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.