Home / 19,767.97-27,279.79-10,815.51

Finding the Fourth Proportional to 19,767.97, 27,279.79 and 10,815.51

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Solution

The fourth proportional to 19,767.97, 27,279.79 and 10,815.51 is: 14,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,767.97 : 27,279.79 = 10,815.51 : x
  2. Step 2: Convert to fraction form
    19,767.97/27,279.79 = 10,815.51/x
  3. Step 3: Cross multiply
    19,767.97x = 27,279.79 × 10,815.51
  4. Step 4: Simplify right side
    19,767.97x = 295,044,878.44
  5. Step 5: Solve for x
    x = 295,044,878.44/19,767.97
  6. Step 6: Final answer
    x = 14,925.40

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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.