Home / 19,894.11-27,449.60-11,505.75

Finding the Fourth Proportional to 19,894.11, 27,449.60 and 11,505.75

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Solution

The fourth proportional to 19,894.11, 27,449.60 and 11,505.75 is: 15,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,894.11 : 27,449.60 = 11,505.75 : x
  2. Step 2: Convert to fraction form
    19,894.11/27,449.60 = 11,505.75/x
  3. Step 3: Cross multiply
    19,894.11x = 27,449.60 × 11,505.75
  4. Step 4: Simplify right side
    19,894.11x = 315,828,177.67
  5. Step 5: Solve for x
    x = 315,828,177.67/19,894.11
  6. Step 6: Final answer
    x = 15,875.46

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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.