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Finding the Fourth Proportional to 30,891.40, 46,280.40 and 17,704.60

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Solution

The fourth proportional to 30,891.40, 46,280.40 and 17,704.60 is: 26,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891.40 : 46,280.40 = 17,704.60 : x
  2. Step 2: Convert to fraction form
    30,891.40/46,280.40 = 17,704.60/x
  3. Step 3: Cross multiply
    30,891.40x = 46,280.40 × 17,704.60
  4. Step 4: Simplify right side
    30,891.40x = 819,375,969.84
  5. Step 5: Solve for x
    x = 819,375,969.84/30,891.40
  6. Step 6: Final answer
    x = 26,524.40

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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.