Home / 12,528.80-18,771.60-5,940.80

Finding the Fourth Proportional to 12,528.80, 18,771.60 and 5,940.80

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Solution

The fourth proportional to 12,528.80, 18,771.60 and 5,940.80 is: 8,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.80 : 18,771.60 = 5,940.80 : x
  2. Step 2: Convert to fraction form
    12,528.80/18,771.60 = 5,940.80/x
  3. Step 3: Cross multiply
    12,528.80x = 18,771.60 × 5,940.80
  4. Step 4: Simplify right side
    12,528.80x = 111,518,321.28
  5. Step 5: Solve for x
    x = 111,518,321.28/12,528.80
  6. Step 6: Final answer
    x = 8,900.96

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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.