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Finding the Fourth Proportional to 30,131.40, 41,580.90 and 16,702.68

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Solution

The fourth proportional to 30,131.40, 41,580.90 and 16,702.68 is: 23,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.40 : 41,580.90 = 16,702.68 : x
  2. Step 2: Convert to fraction form
    30,131.40/41,580.90 = 16,702.68/x
  3. Step 3: Cross multiply
    30,131.40x = 41,580.90 × 16,702.68
  4. Step 4: Simplify right side
    30,131.40x = 694,512,466.81
  5. Step 5: Solve for x
    x = 694,512,466.81/30,131.40
  6. Step 6: Final answer
    x = 23,049.46

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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.