Home / 21,087.08-29,098.42-11,655.64

Finding the Fourth Proportional to 21,087.08, 29,098.42 and 11,655.64

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Solution

The fourth proportional to 21,087.08, 29,098.42 and 11,655.64 is: 16,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.08 : 29,098.42 = 11,655.64 : x
  2. Step 2: Convert to fraction form
    21,087.08/29,098.42 = 11,655.64/x
  3. Step 3: Cross multiply
    21,087.08x = 29,098.42 × 11,655.64
  4. Step 4: Simplify right side
    21,087.08x = 339,160,708.09
  5. Step 5: Solve for x
    x = 339,160,708.09/21,087.08
  6. Step 6: Final answer
    x = 16,083.82

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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.