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Finding the Fourth Proportional to 33,320.48, 45,976.48 and 20,580.80

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Solution

The fourth proportional to 33,320.48, 45,976.48 and 20,580.80 is: 28,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.48 : 45,976.48 = 20,580.80 : x
  2. Step 2: Convert to fraction form
    33,320.48/45,976.48 = 20,580.80/x
  3. Step 3: Cross multiply
    33,320.48x = 45,976.48 × 20,580.80
  4. Step 4: Simplify right side
    33,320.48x = 946,232,739.58
  5. Step 5: Solve for x
    x = 946,232,739.58/33,320.48
  6. Step 6: Final answer
    x = 28,397.93

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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.