Home / 19,816.45-27,345.64-10,863.78

Finding the Fourth Proportional to 19,816.45, 27,345.64 and 10,863.78

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Solution

The fourth proportional to 19,816.45, 27,345.64 and 10,863.78 is: 14,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.45 : 27,345.64 = 10,863.78 : x
  2. Step 2: Convert to fraction form
    19,816.45/27,345.64 = 10,863.78/x
  3. Step 3: Cross multiply
    19,816.45x = 27,345.64 × 10,863.78
  4. Step 4: Simplify right side
    19,816.45x = 297,077,016.92
  5. Step 5: Solve for x
    x = 297,077,016.92/19,816.45
  6. Step 6: Final answer
    x = 14,991.43

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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.