Home / 33,081.07-45,659.09-20,345.21

Finding the Fourth Proportional to 33,081.07, 45,659.09 and 20,345.21

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Solution

The fourth proportional to 33,081.07, 45,659.09 and 20,345.21 is: 28,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,081.07 : 45,659.09 = 20,345.21 : x
  2. Step 2: Convert to fraction form
    33,081.07/45,659.09 = 20,345.21/x
  3. Step 3: Cross multiply
    33,081.07x = 45,659.09 × 20,345.21
  4. Step 4: Simplify right side
    33,081.07x = 928,943,774.46
  5. Step 5: Solve for x
    x = 928,943,774.46/33,081.07
  6. Step 6: Final answer
    x = 28,080.83

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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.