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Finding the Fourth Proportional to 33,115.84, 45,700.20 and 18,968.40

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Solution

The fourth proportional to 33,115.84, 45,700.20 and 18,968.40 is: 26,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,115.84 : 45,700.20 = 18,968.40 : x
  2. Step 2: Convert to fraction form
    33,115.84/45,700.20 = 18,968.40/x
  3. Step 3: Cross multiply
    33,115.84x = 45,700.20 × 18,968.40
  4. Step 4: Simplify right side
    33,115.84x = 866,859,673.68
  5. Step 5: Solve for x
    x = 866,859,673.68/33,115.84
  6. Step 6: Final answer
    x = 26,176.59

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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.