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Finding the Fourth Proportional to 33,289.38, 49,934.07 and 9,915.21

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Solution

The fourth proportional to 33,289.38, 49,934.07 and 9,915.21 is: 14,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,289.38 : 49,934.07 = 9,915.21 : x
  2. Step 2: Convert to fraction form
    33,289.38/49,934.07 = 9,915.21/x
  3. Step 3: Cross multiply
    33,289.38x = 49,934.07 × 9,915.21
  4. Step 4: Simplify right side
    33,289.38x = 495,106,790.20
  5. Step 5: Solve for x
    x = 495,106,790.20/33,289.38
  6. Step 6: Final answer
    x = 14,872.82

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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.