Home / 13,751.35-20,621.79-5,857.60

Finding the Fourth Proportional to 13,751.35, 20,621.79 and 5,857.60

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Solution

The fourth proportional to 13,751.35, 20,621.79 and 5,857.60 is: 8,784.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.35 : 20,621.79 = 5,857.60 : x
  2. Step 2: Convert to fraction form
    13,751.35/20,621.79 = 5,857.60/x
  3. Step 3: Cross multiply
    13,751.35x = 20,621.79 × 5,857.60
  4. Step 4: Simplify right side
    13,751.35x = 120,794,160.19
  5. Step 5: Solve for x
    x = 120,794,160.19/13,751.35
  6. Step 6: Final answer
    x = 8,784.17

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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.