Home / 21,101.21-29,118.89-11,669.93

Finding the Fourth Proportional to 21,101.21, 29,118.89 and 11,669.93

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Solution

The fourth proportional to 21,101.21, 29,118.89 and 11,669.93 is: 16,104.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.21 : 29,118.89 = 11,669.93 : x
  2. Step 2: Convert to fraction form
    21,101.21/29,118.89 = 11,669.93/x
  3. Step 3: Cross multiply
    21,101.21x = 29,118.89 × 11,669.93
  4. Step 4: Simplify right side
    21,101.21x = 339,815,349.63
  5. Step 5: Solve for x
    x = 339,815,349.63/21,101.21
  6. Step 6: Final answer
    x = 16,104.07

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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.