Home / 27,890.39-38,451.59-20,226.77

Finding the Fourth Proportional to 27,890.39, 38,451.59 and 20,226.77

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Solution

The fourth proportional to 27,890.39, 38,451.59 and 20,226.77 is: 27,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.39 : 38,451.59 = 20,226.77 : x
  2. Step 2: Convert to fraction form
    27,890.39/38,451.59 = 20,226.77/x
  3. Step 3: Cross multiply
    27,890.39x = 38,451.59 × 20,226.77
  4. Step 4: Simplify right side
    27,890.39x = 777,751,462.06
  5. Step 5: Solve for x
    x = 777,751,462.06/27,890.39
  6. Step 6: Final answer
    x = 27,886.01

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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.