Home / 21,661.44-29,888.64-12,226.56

Finding the Fourth Proportional to 21,661.44, 29,888.64 and 12,226.56

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Solution

The fourth proportional to 21,661.44, 29,888.64 and 12,226.56 is: 16,870.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.44 : 29,888.64 = 12,226.56 : x
  2. Step 2: Convert to fraction form
    21,661.44/29,888.64 = 12,226.56/x
  3. Step 3: Cross multiply
    21,661.44x = 29,888.64 × 12,226.56
  4. Step 4: Simplify right side
    21,661.44x = 365,435,250.28
  5. Step 5: Solve for x
    x = 365,435,250.28/21,661.44
  6. Step 6: Final answer
    x = 16,870.31

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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.