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Finding the Fourth Proportional to 12,601.98, 18,910.26 and 8,699.40

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Solution

The fourth proportional to 12,601.98, 18,910.26 and 8,699.40 is: 13,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601.98 : 18,910.26 = 8,699.40 : x
  2. Step 2: Convert to fraction form
    12,601.98/18,910.26 = 8,699.40/x
  3. Step 3: Cross multiply
    12,601.98x = 18,910.26 × 8,699.40
  4. Step 4: Simplify right side
    12,601.98x = 164,507,915.84
  5. Step 5: Solve for x
    x = 164,507,915.84/12,601.98
  6. Step 6: Final answer
    x = 13,054.13

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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.