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Finding the Fourth Proportional to 31,959.84, 47,940.24 and 8,589.60

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Solution

The fourth proportional to 31,959.84, 47,940.24 and 8,589.60 is: 12,884.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,959.84 : 47,940.24 = 8,589.60 : x
  2. Step 2: Convert to fraction form
    31,959.84/47,940.24 = 8,589.60/x
  3. Step 3: Cross multiply
    31,959.84x = 47,940.24 × 8,589.60
  4. Step 4: Simplify right side
    31,959.84x = 411,787,485.50
  5. Step 5: Solve for x
    x = 411,787,485.50/31,959.84
  6. Step 6: Final answer
    x = 12,884.53

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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.