Home / 27,581.76-38,080.80-18,166.32

Finding the Fourth Proportional to 27,581.76, 38,080.80 and 18,166.32

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Solution

The fourth proportional to 27,581.76, 38,080.80 and 18,166.32 is: 25,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,581.76 : 38,080.80 = 18,166.32 : x
  2. Step 2: Convert to fraction form
    27,581.76/38,080.80 = 18,166.32/x
  3. Step 3: Cross multiply
    27,581.76x = 38,080.80 × 18,166.32
  4. Step 4: Simplify right side
    27,581.76x = 691,787,998.66
  5. Step 5: Solve for x
    x = 691,787,998.66/27,581.76
  6. Step 6: Final answer
    x = 25,081.36

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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.