Home / 12,006.96-18,010.26-5,428.56

Finding the Fourth Proportional to 12,006.96, 18,010.26 and 5,428.56

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Solution

The fourth proportional to 12,006.96, 18,010.26 and 5,428.56 is: 8,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.96 : 18,010.26 = 5,428.56 : x
  2. Step 2: Convert to fraction form
    12,006.96/18,010.26 = 5,428.56/x
  3. Step 3: Cross multiply
    12,006.96x = 18,010.26 × 5,428.56
  4. Step 4: Simplify right side
    12,006.96x = 97,769,777.03
  5. Step 5: Solve for x
    x = 97,769,777.03/12,006.96
  6. Step 6: Final answer
    x = 8,142.76

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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.