Home / 27,694.78-38,219.58-15,120.34

Finding the Fourth Proportional to 27,694.78, 38,219.58 and 15,120.34

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Solution

The fourth proportional to 27,694.78, 38,219.58 and 15,120.34 is: 20,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,694.78 : 38,219.58 = 15,120.34 : x
  2. Step 2: Convert to fraction form
    27,694.78/38,219.58 = 15,120.34/x
  3. Step 3: Cross multiply
    27,694.78x = 38,219.58 × 15,120.34
  4. Step 4: Simplify right side
    27,694.78x = 577,893,044.26
  5. Step 5: Solve for x
    x = 577,893,044.26/27,694.78
  6. Step 6: Final answer
    x = 20,866.50

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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.