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Finding the Fourth Proportional to 33,643.49, 46,424.50 and 20,720.68

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Solution

The fourth proportional to 33,643.49, 46,424.50 and 20,720.68 is: 28,592.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,643.49 : 46,424.50 = 20,720.68 : x
  2. Step 2: Convert to fraction form
    33,643.49/46,424.50 = 20,720.68/x
  3. Step 3: Cross multiply
    33,643.49x = 46,424.50 × 20,720.68
  4. Step 4: Simplify right side
    33,643.49x = 961,947,040.80
  5. Step 5: Solve for x
    x = 961,947,040.80/33,643.49
  6. Step 6: Final answer
    x = 28,592.37

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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.