Home / 12,655.44-18,982.80-3,890.16

Finding the Fourth Proportional to 12,655.44, 18,982.80 and 3,890.16

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Solution

The fourth proportional to 12,655.44, 18,982.80 and 3,890.16 is: 5,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.44 : 18,982.80 = 3,890.16 : x
  2. Step 2: Convert to fraction form
    12,655.44/18,982.80 = 3,890.16/x
  3. Step 3: Cross multiply
    12,655.44x = 18,982.80 × 3,890.16
  4. Step 4: Simplify right side
    12,655.44x = 73,846,129.25
  5. Step 5: Solve for x
    x = 73,846,129.25/12,655.44
  6. Step 6: Final answer
    x = 5,835.13

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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.