Home / 12,157.12-18,219.79-6,228.98

Finding the Fourth Proportional to 12,157.12, 18,219.79 and 6,228.98

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Solution

The fourth proportional to 12,157.12, 18,219.79 and 6,228.98 is: 9,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.12 : 18,219.79 = 6,228.98 : x
  2. Step 2: Convert to fraction form
    12,157.12/18,219.79 = 6,228.98/x
  3. Step 3: Cross multiply
    12,157.12x = 18,219.79 × 6,228.98
  4. Step 4: Simplify right side
    12,157.12x = 113,490,741.25
  5. Step 5: Solve for x
    x = 113,490,741.25/12,157.12
  6. Step 6: Final answer
    x = 9,335.33

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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.