Home / 21,087.93-29,102.85-11,656.29

Finding the Fourth Proportional to 21,087.93, 29,102.85 and 11,656.29

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Solution

The fourth proportional to 21,087.93, 29,102.85 and 11,656.29 is: 16,086.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.93 : 29,102.85 = 11,656.29 : x
  2. Step 2: Convert to fraction form
    21,087.93/29,102.85 = 11,656.29/x
  3. Step 3: Cross multiply
    21,087.93x = 29,102.85 × 11,656.29
  4. Step 4: Simplify right side
    21,087.93x = 339,231,259.43
  5. Step 5: Solve for x
    x = 339,231,259.43/21,087.93
  6. Step 6: Final answer
    x = 16,086.51

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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.