Home / 21,164.94-29,208.32-11,605.59

Finding the Fourth Proportional to 21,164.94, 29,208.32 and 11,605.59

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Solution

The fourth proportional to 21,164.94, 29,208.32 and 11,605.59 is: 16,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.94 : 29,208.32 = 11,605.59 : x
  2. Step 2: Convert to fraction form
    21,164.94/29,208.32 = 11,605.59/x
  3. Step 3: Cross multiply
    21,164.94x = 29,208.32 × 11,605.59
  4. Step 4: Simplify right side
    21,164.94x = 338,979,728.48
  5. Step 5: Solve for x
    x = 338,979,728.48/21,164.94
  6. Step 6: Final answer
    x = 16,016.10

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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.