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Finding the Fourth Proportional to 33,363.40, 46,019.70 and 21,407.80

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Solution

The fourth proportional to 33,363.40, 46,019.70 and 21,407.80 is: 29,528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,363.40 : 46,019.70 = 21,407.80 : x
  2. Step 2: Convert to fraction form
    33,363.40/46,019.70 = 21,407.80/x
  3. Step 3: Cross multiply
    33,363.40x = 46,019.70 × 21,407.80
  4. Step 4: Simplify right side
    33,363.40x = 985,180,533.66
  5. Step 5: Solve for x
    x = 985,180,533.66/33,363.40
  6. Step 6: Final answer
    x = 29,528.78

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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.