Home / 19,815.71-27,345.69-10,863.54

Finding the Fourth Proportional to 19,815.71, 27,345.69 and 10,863.54

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Solution

The fourth proportional to 19,815.71, 27,345.69 and 10,863.54 is: 14,991.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.71 : 27,345.69 = 10,863.54 : x
  2. Step 2: Convert to fraction form
    19,815.71/27,345.69 = 10,863.54/x
  3. Step 3: Cross multiply
    19,815.71x = 27,345.69 × 10,863.54
  4. Step 4: Simplify right side
    19,815.71x = 297,070,997.14
  5. Step 5: Solve for x
    x = 297,070,997.14/19,815.71
  6. Step 6: Final answer
    x = 14,991.69

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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.