Home / 19,830.45-27,366.78-10,878.33

Finding the Fourth Proportional to 19,830.45, 27,366.78 and 10,878.33

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Solution

The fourth proportional to 19,830.45, 27,366.78 and 10,878.33 is: 15,012.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.45 : 27,366.78 = 10,878.33 : x
  2. Step 2: Convert to fraction form
    19,830.45/27,366.78 = 10,878.33/x
  3. Step 3: Cross multiply
    19,830.45x = 27,366.78 × 10,878.33
  4. Step 4: Simplify right side
    19,830.45x = 297,704,863.88
  5. Step 5: Solve for x
    x = 297,704,863.88/19,830.45
  6. Step 6: Final answer
    x = 15,012.51

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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.