Home / 11,990.18-17,985.28-6,143.60

Finding the Fourth Proportional to 11,990.18, 17,985.28 and 6,143.60

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Solution

The fourth proportional to 11,990.18, 17,985.28 and 6,143.60 is: 9,215.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.18 : 17,985.28 = 6,143.60 : x
  2. Step 2: Convert to fraction form
    11,990.18/17,985.28 = 6,143.60/x
  3. Step 3: Cross multiply
    11,990.18x = 17,985.28 × 6,143.60
  4. Step 4: Simplify right side
    11,990.18x = 110,494,366.21
  5. Step 5: Solve for x
    x = 110,494,366.21/11,990.18
  6. Step 6: Final answer
    x = 9,215.41

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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.