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Finding the Fourth Proportional to 19,336.80, 29,004.84 and 5,485.80

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Solution

The fourth proportional to 19,336.80, 29,004.84 and 5,485.80 is: 8,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,336.80 : 29,004.84 = 5,485.80 : x
  2. Step 2: Convert to fraction form
    19,336.80/29,004.84 = 5,485.80/x
  3. Step 3: Cross multiply
    19,336.80x = 29,004.84 × 5,485.80
  4. Step 4: Simplify right side
    19,336.80x = 159,114,751.27
  5. Step 5: Solve for x
    x = 159,114,751.27/19,336.80
  6. Step 6: Final answer
    x = 8,228.60

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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.