Home / 33,120.79-45,698.67-21,016.87

Finding the Fourth Proportional to 33,120.79, 45,698.67 and 21,016.87

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Solution

The fourth proportional to 33,120.79, 45,698.67 and 21,016.87 is: 28,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.79 : 45,698.67 = 21,016.87 : x
  2. Step 2: Convert to fraction form
    33,120.79/45,698.67 = 21,016.87/x
  3. Step 3: Cross multiply
    33,120.79x = 45,698.67 × 21,016.87
  4. Step 4: Simplify right side
    33,120.79x = 960,443,006.56
  5. Step 5: Solve for x
    x = 960,443,006.56/33,120.79
  6. Step 6: Final answer
    x = 28,998.19

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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.