Home / 11,990.28-17,985.44-4,197.32

Finding the Fourth Proportional to 11,990.28, 17,985.44 and 4,197.32

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Solution

The fourth proportional to 11,990.28, 17,985.44 and 4,197.32 is: 6,295.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.28 : 17,985.44 = 4,197.32 : x
  2. Step 2: Convert to fraction form
    11,990.28/17,985.44 = 4,197.32/x
  3. Step 3: Cross multiply
    11,990.28x = 17,985.44 × 4,197.32
  4. Step 4: Simplify right side
    11,990.28x = 75,490,647.02
  5. Step 5: Solve for x
    x = 75,490,647.02/11,990.28
  6. Step 6: Final answer
    x = 6,295.99

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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.