Home / 12,664.98-18,999.63-3,899.70

Finding the Fourth Proportional to 12,664.98, 18,999.63 and 3,899.70

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Solution

The fourth proportional to 12,664.98, 18,999.63 and 3,899.70 is: 5,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.98 : 18,999.63 = 3,899.70 : x
  2. Step 2: Convert to fraction form
    12,664.98/18,999.63 = 3,899.70/x
  3. Step 3: Cross multiply
    12,664.98x = 18,999.63 × 3,899.70
  4. Step 4: Simplify right side
    12,664.98x = 74,092,857.11
  5. Step 5: Solve for x
    x = 74,092,857.11/12,664.98
  6. Step 6: Final answer
    x = 5,850.22

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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.