Home / 11,989.35-17,971.86-5,740.20

Finding the Fourth Proportional to 11,989.35, 17,971.86 and 5,740.20

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Solution

The fourth proportional to 11,989.35, 17,971.86 and 5,740.20 is: 8,604.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.35 : 17,971.86 = 5,740.20 : x
  2. Step 2: Convert to fraction form
    11,989.35/17,971.86 = 5,740.20/x
  3. Step 3: Cross multiply
    11,989.35x = 17,971.86 × 5,740.20
  4. Step 4: Simplify right side
    11,989.35x = 103,162,070.77
  5. Step 5: Solve for x
    x = 103,162,070.77/11,989.35
  6. Step 6: Final answer
    x = 8,604.48

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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.