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Finding the Fourth Proportional to 29,920.40, 44,880.60 and 19,422.80

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Solution

The fourth proportional to 29,920.40, 44,880.60 and 19,422.80 is: 29,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,920.40 : 44,880.60 = 19,422.80 : x
  2. Step 2: Convert to fraction form
    29,920.40/44,880.60 = 19,422.80/x
  3. Step 3: Cross multiply
    29,920.40x = 44,880.60 × 19,422.80
  4. Step 4: Simplify right side
    29,920.40x = 871,706,917.68
  5. Step 5: Solve for x
    x = 871,706,917.68/29,920.40
  6. Step 6: Final answer
    x = 29,134.20

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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.