Home / 19,776.92-27,290.78-11,279.40

Finding the Fourth Proportional to 19,776.92, 27,290.78 and 11,279.40

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Solution

The fourth proportional to 19,776.92, 27,290.78 and 11,279.40 is: 15,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.92 : 27,290.78 = 11,279.40 : x
  2. Step 2: Convert to fraction form
    19,776.92/27,290.78 = 11,279.40/x
  3. Step 3: Cross multiply
    19,776.92x = 27,290.78 × 11,279.40
  4. Step 4: Simplify right side
    19,776.92x = 307,823,623.93
  5. Step 5: Solve for x
    x = 307,823,623.93/19,776.92
  6. Step 6: Final answer
    x = 15,564.79

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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.