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Finding the Fourth Proportional to 33,040.80, 49,546.80 and 13,312.80

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Solution

The fourth proportional to 33,040.80, 49,546.80 and 13,312.80 is: 19,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,040.80 : 49,546.80 = 13,312.80 : x
  2. Step 2: Convert to fraction form
    33,040.80/49,546.80 = 13,312.80/x
  3. Step 3: Cross multiply
    33,040.80x = 49,546.80 × 13,312.80
  4. Step 4: Simplify right side
    33,040.80x = 659,606,639.04
  5. Step 5: Solve for x
    x = 659,606,639.04/33,040.80
  6. Step 6: Final answer
    x = 19,963.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.