Home / 19,786.96-27,308.60-11,287.13

Finding the Fourth Proportional to 19,786.96, 27,308.60 and 11,287.13

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Solution

The fourth proportional to 19,786.96, 27,308.60 and 11,287.13 is: 15,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.96 : 27,308.60 = 11,287.13 : x
  2. Step 2: Convert to fraction form
    19,786.96/27,308.60 = 11,287.13/x
  3. Step 3: Cross multiply
    19,786.96x = 27,308.60 × 11,287.13
  4. Step 4: Simplify right side
    19,786.96x = 308,235,718.32
  5. Step 5: Solve for x
    x = 308,235,718.32/19,786.96
  6. Step 6: Final answer
    x = 15,577.72

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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.