Home / 11,990.03-17,986.58-6,435.76

Finding the Fourth Proportional to 11,990.03, 17,986.58 and 6,435.76

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Solution

The fourth proportional to 11,990.03, 17,986.58 and 6,435.76 is: 9,654.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.03 : 17,986.58 = 6,435.76 : x
  2. Step 2: Convert to fraction form
    11,990.03/17,986.58 = 6,435.76/x
  3. Step 3: Cross multiply
    11,990.03x = 17,986.58 × 6,435.76
  4. Step 4: Simplify right side
    11,990.03x = 115,757,189.99
  5. Step 5: Solve for x
    x = 115,757,189.99/11,990.03
  6. Step 6: Final answer
    x = 9,654.45

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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.