Home / 12,629.90-18,943.05-4,310.30

Finding the Fourth Proportional to 12,629.90, 18,943.05 and 4,310.30

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Solution

The fourth proportional to 12,629.90, 18,943.05 and 4,310.30 is: 6,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.90 : 18,943.05 = 4,310.30 : x
  2. Step 2: Convert to fraction form
    12,629.90/18,943.05 = 4,310.30/x
  3. Step 3: Cross multiply
    12,629.90x = 18,943.05 × 4,310.30
  4. Step 4: Simplify right side
    12,629.90x = 81,650,228.42
  5. Step 5: Solve for x
    x = 81,650,228.42/12,629.90
  6. Step 6: Final answer
    x = 6,464.84

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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.