Home / 12,636.56-18,939-9,725.84

Finding the Fourth Proportional to 12,636.56, 18,939 and 9,725.84

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Solution

The fourth proportional to 12,636.56, 18,939 and 9,725.84 is: 14,576.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.56 : 18,939 = 9,725.84 : x
  2. Step 2: Convert to fraction form
    12,636.56/18,939 = 9,725.84/x
  3. Step 3: Cross multiply
    12,636.56x = 18,939 × 9,725.84
  4. Step 4: Simplify right side
    12,636.56x = 184,197,683.76
  5. Step 5: Solve for x
    x = 184,197,683.76/12,636.56
  6. Step 6: Final answer
    x = 14,576.57

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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.