Home / 21,086.88-29,100.24-11,655.84

Finding the Fourth Proportional to 21,086.88, 29,100.24 and 11,655.84

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Solution

The fourth proportional to 21,086.88, 29,100.24 and 11,655.84 is: 16,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.88 : 29,100.24 = 11,655.84 : x
  2. Step 2: Convert to fraction form
    21,086.88/29,100.24 = 11,655.84/x
  3. Step 3: Cross multiply
    21,086.88x = 29,100.24 × 11,655.84
  4. Step 4: Simplify right side
    21,086.88x = 339,187,741.40
  5. Step 5: Solve for x
    x = 339,187,741.40/21,086.88
  6. Step 6: Final answer
    x = 16,085.25

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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.