Home / 12,642.64-18,962.70-3,877.60

Finding the Fourth Proportional to 12,642.64, 18,962.70 and 3,877.60

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Solution

The fourth proportional to 12,642.64, 18,962.70 and 3,877.60 is: 5,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.64 : 18,962.70 = 3,877.60 : x
  2. Step 2: Convert to fraction form
    12,642.64/18,962.70 = 3,877.60/x
  3. Step 3: Cross multiply
    12,642.64x = 18,962.70 × 3,877.60
  4. Step 4: Simplify right side
    12,642.64x = 73,529,765.52
  5. Step 5: Solve for x
    x = 73,529,765.52/12,642.64
  6. Step 6: Final answer
    x = 5,816.01

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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.