Home / 12,261.58-16,920.82-7,226.01

Finding the Fourth Proportional to 12,261.58, 16,920.82 and 7,226.01

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Solution

The fourth proportional to 12,261.58, 16,920.82 and 7,226.01 is: 9,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.58 : 16,920.82 = 7,226.01 : x
  2. Step 2: Convert to fraction form
    12,261.58/16,920.82 = 7,226.01/x
  3. Step 3: Cross multiply
    12,261.58x = 16,920.82 × 7,226.01
  4. Step 4: Simplify right side
    12,261.58x = 122,269,936.10
  5. Step 5: Solve for x
    x = 122,269,936.10/12,261.58
  6. Step 6: Final answer
    x = 9,971.80

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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.