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Finding the Fourth Proportional to 22,201.98, 30,638.22 and 12,130.46

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Solution

The fourth proportional to 22,201.98, 30,638.22 and 12,130.46 is: 16,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,201.98 : 30,638.22 = 12,130.46 : x
  2. Step 2: Convert to fraction form
    22,201.98/30,638.22 = 12,130.46/x
  3. Step 3: Cross multiply
    22,201.98x = 30,638.22 × 12,130.46
  4. Step 4: Simplify right side
    22,201.98x = 371,655,702.18
  5. Step 5: Solve for x
    x = 371,655,702.18/22,201.98
  6. Step 6: Final answer
    x = 16,739.75

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1.5x scale

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.