Home / 19,845.78-27,387.30-10,894.32

Finding the Fourth Proportional to 19,845.78, 27,387.30 and 10,894.32

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Solution

The fourth proportional to 19,845.78, 27,387.30 and 10,894.32 is: 15,034.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.78 : 27,387.30 = 10,894.32 : x
  2. Step 2: Convert to fraction form
    19,845.78/27,387.30 = 10,894.32/x
  3. Step 3: Cross multiply
    19,845.78x = 27,387.30 × 10,894.32
  4. Step 4: Simplify right side
    19,845.78x = 298,366,010.14
  5. Step 5: Solve for x
    x = 298,366,010.14/19,845.78
  6. Step 6: Final answer
    x = 15,034.23

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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.