Home / 19,579.85-27,019.79-11,081.81

Finding the Fourth Proportional to 19,579.85, 27,019.79 and 11,081.81

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Solution

The fourth proportional to 19,579.85, 27,019.79 and 11,081.81 is: 15,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.85 : 27,019.79 = 11,081.81 : x
  2. Step 2: Convert to fraction form
    19,579.85/27,019.79 = 11,081.81/x
  3. Step 3: Cross multiply
    19,579.85x = 27,019.79 × 11,081.81
  4. Step 4: Simplify right side
    19,579.85x = 299,427,988.51
  5. Step 5: Solve for x
    x = 299,427,988.51/19,579.85
  6. Step 6: Final answer
    x = 15,292.66

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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.