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Finding the Fourth Proportional to 33,328, 45,993.64 and 18,220.32

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Solution

The fourth proportional to 33,328, 45,993.64 and 18,220.32 is: 25,144.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,328 : 45,993.64 = 18,220.32 : x
  2. Step 2: Convert to fraction form
    33,328/45,993.64 = 18,220.32/x
  3. Step 3: Cross multiply
    33,328x = 45,993.64 × 18,220.32
  4. Step 4: Simplify right side
    33,328x = 838,018,838.76
  5. Step 5: Solve for x
    x = 838,018,838.76/33,328
  6. Step 6: Final answer
    x = 25,144.59

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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.