Home / 11,998.28-18,000.25-5,424.45

Finding the Fourth Proportional to 11,998.28, 18,000.25 and 5,424.45

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Solution

The fourth proportional to 11,998.28, 18,000.25 and 5,424.45 is: 8,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.28 : 18,000.25 = 5,424.45 : x
  2. Step 2: Convert to fraction form
    11,998.28/18,000.25 = 5,424.45/x
  3. Step 3: Cross multiply
    11,998.28x = 18,000.25 × 5,424.45
  4. Step 4: Simplify right side
    11,998.28x = 97,641,428.99
  5. Step 5: Solve for x
    x = 97,641,428.99/11,998.28
  6. Step 6: Final answer
    x = 8,137.96

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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.