Home / 19,965.51-27,551.13-11,013.09

Finding the Fourth Proportional to 19,965.51, 27,551.13 and 11,013.09

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Solution

The fourth proportional to 19,965.51, 27,551.13 and 11,013.09 is: 15,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.51 : 27,551.13 = 11,013.09 : x
  2. Step 2: Convert to fraction form
    19,965.51/27,551.13 = 11,013.09/x
  3. Step 3: Cross multiply
    19,965.51x = 27,551.13 × 11,013.09
  4. Step 4: Simplify right side
    19,965.51x = 303,423,074.29
  5. Step 5: Solve for x
    x = 303,423,074.29/19,965.51
  6. Step 6: Final answer
    x = 15,197.36

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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.