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Finding the Fourth Proportional to 33,287.80, 49,931.46 and 9,914.20

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Solution

The fourth proportional to 33,287.80, 49,931.46 and 9,914.20 is: 14,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,287.80 : 49,931.46 = 9,914.20 : x
  2. Step 2: Convert to fraction form
    33,287.80/49,931.46 = 9,914.20/x
  3. Step 3: Cross multiply
    33,287.80x = 49,931.46 × 9,914.20
  4. Step 4: Simplify right side
    33,287.80x = 495,030,480.73
  5. Step 5: Solve for x
    x = 495,030,480.73/33,287.80
  6. Step 6: Final answer
    x = 14,871.23

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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.