Home / 12,435.78-18,649.80-4,114.02

Finding the Fourth Proportional to 12,435.78, 18,649.80 and 4,114.02

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Solution

The fourth proportional to 12,435.78, 18,649.80 and 4,114.02 is: 6,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.78 : 18,649.80 = 4,114.02 : x
  2. Step 2: Convert to fraction form
    12,435.78/18,649.80 = 4,114.02/x
  3. Step 3: Cross multiply
    12,435.78x = 18,649.80 × 4,114.02
  4. Step 4: Simplify right side
    12,435.78x = 76,725,650.20
  5. Step 5: Solve for x
    x = 76,725,650.20/12,435.78
  6. Step 6: Final answer
    x = 6,169.75

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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.