Home / 21,101.86-29,120.07-11,670.22

Finding the Fourth Proportional to 21,101.86, 29,120.07 and 11,670.22

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Solution

The fourth proportional to 21,101.86, 29,120.07 and 11,670.22 is: 16,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.86 : 29,120.07 = 11,670.22 : x
  2. Step 2: Convert to fraction form
    21,101.86/29,120.07 = 11,670.22/x
  3. Step 3: Cross multiply
    21,101.86x = 29,120.07 × 11,670.22
  4. Step 4: Simplify right side
    21,101.86x = 339,837,623.32
  5. Step 5: Solve for x
    x = 339,837,623.32/21,101.86
  6. Step 6: Final answer
    x = 16,104.63

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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.