Home / 12,228.12-18,331.02-4,435.20

Finding the Fourth Proportional to 12,228.12, 18,331.02 and 4,435.20

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Solution

The fourth proportional to 12,228.12, 18,331.02 and 4,435.20 is: 6,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.12 : 18,331.02 = 4,435.20 : x
  2. Step 2: Convert to fraction form
    12,228.12/18,331.02 = 4,435.20/x
  3. Step 3: Cross multiply
    12,228.12x = 18,331.02 × 4,435.20
  4. Step 4: Simplify right side
    12,228.12x = 81,301,739.90
  5. Step 5: Solve for x
    x = 81,301,739.90/12,228.12
  6. Step 6: Final answer
    x = 6,648.75

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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.