Home / 19,780.92-27,297.72-10,828.49

Finding the Fourth Proportional to 19,780.92, 27,297.72 and 10,828.49

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Solution

The fourth proportional to 19,780.92, 27,297.72 and 10,828.49 is: 14,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.92 : 27,297.72 = 10,828.49 : x
  2. Step 2: Convert to fraction form
    19,780.92/27,297.72 = 10,828.49/x
  3. Step 3: Cross multiply
    19,780.92x = 27,297.72 × 10,828.49
  4. Step 4: Simplify right side
    19,780.92x = 295,592,951.55
  5. Step 5: Solve for x
    x = 295,592,951.55/19,780.92
  6. Step 6: Final answer
    x = 14,943.34

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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.