Home / 12,655.53-18,982.83-3,890.22

Finding the Fourth Proportional to 12,655.53, 18,982.83 and 3,890.22

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Solution

The fourth proportional to 12,655.53, 18,982.83 and 3,890.22 is: 5,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.53 : 18,982.83 = 3,890.22 : x
  2. Step 2: Convert to fraction form
    12,655.53/18,982.83 = 3,890.22/x
  3. Step 3: Cross multiply
    12,655.53x = 18,982.83 × 3,890.22
  4. Step 4: Simplify right side
    12,655.53x = 73,847,365.47
  5. Step 5: Solve for x
    x = 73,847,365.47/12,655.53
  6. Step 6: Final answer
    x = 5,835.18

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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.