Home / 19,919.07-27,489.63-11,535.57

Finding the Fourth Proportional to 19,919.07, 27,489.63 and 11,535.57

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Solution

The fourth proportional to 19,919.07, 27,489.63 and 11,535.57 is: 15,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.07 : 27,489.63 = 11,535.57 : x
  2. Step 2: Convert to fraction form
    19,919.07/27,489.63 = 11,535.57/x
  3. Step 3: Cross multiply
    19,919.07x = 27,489.63 × 11,535.57
  4. Step 4: Simplify right side
    19,919.07x = 317,108,551.14
  5. Step 5: Solve for x
    x = 317,108,551.14/19,919.07
  6. Step 6: Final answer
    x = 15,919.85

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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.