Home / 12,237.12-16,889.94-7,980.84

Finding the Fourth Proportional to 12,237.12, 16,889.94 and 7,980.84

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Solution

The fourth proportional to 12,237.12, 16,889.94 and 7,980.84 is: 11,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.12 : 16,889.94 = 7,980.84 : x
  2. Step 2: Convert to fraction form
    12,237.12/16,889.94 = 7,980.84/x
  3. Step 3: Cross multiply
    12,237.12x = 16,889.94 × 7,980.84
  4. Step 4: Simplify right side
    12,237.12x = 134,795,908.75
  5. Step 5: Solve for x
    x = 134,795,908.75/12,237.12
  6. Step 6: Final answer
    x = 11,015.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.