Home / 12,665.18-18,997.56-3,305.24

Finding the Fourth Proportional to 12,665.18, 18,997.56 and 3,305.24

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Solution

The fourth proportional to 12,665.18, 18,997.56 and 3,305.24 is: 4,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.18 : 18,997.56 = 3,305.24 : x
  2. Step 2: Convert to fraction form
    12,665.18/18,997.56 = 3,305.24/x
  3. Step 3: Cross multiply
    12,665.18x = 18,997.56 × 3,305.24
  4. Step 4: Simplify right side
    12,665.18x = 62,791,495.21
  5. Step 5: Solve for x
    x = 62,791,495.21/12,665.18
  6. Step 6: Final answer
    x = 4,957.81

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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.