Home / 21,352.86-29,464.20-11,921.82

Finding the Fourth Proportional to 21,352.86, 29,464.20 and 11,921.82

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Solution

The fourth proportional to 21,352.86, 29,464.20 and 11,921.82 is: 16,450.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.86 : 29,464.20 = 11,921.82 : x
  2. Step 2: Convert to fraction form
    21,352.86/29,464.20 = 11,921.82/x
  3. Step 3: Cross multiply
    21,352.86x = 29,464.20 × 11,921.82
  4. Step 4: Simplify right side
    21,352.86x = 351,266,888.84
  5. Step 5: Solve for x
    x = 351,266,888.84/21,352.86
  6. Step 6: Final answer
    x = 16,450.58

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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.