Home / 21,085.39-29,097.66-11,653.75

Finding the Fourth Proportional to 21,085.39, 29,097.66 and 11,653.75

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Solution

The fourth proportional to 21,085.39, 29,097.66 and 11,653.75 is: 16,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.39 : 29,097.66 = 11,653.75 : x
  2. Step 2: Convert to fraction form
    21,085.39/29,097.66 = 11,653.75/x
  3. Step 3: Cross multiply
    21,085.39x = 29,097.66 × 11,653.75
  4. Step 4: Simplify right side
    21,085.39x = 339,096,855.23
  5. Step 5: Solve for x
    x = 339,096,855.23/21,085.39
  6. Step 6: Final answer
    x = 16,082.08

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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.