Home / 13,523.90-20,280.42-5,621.04

Finding the Fourth Proportional to 13,523.90, 20,280.42 and 5,621.04

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Solution

The fourth proportional to 13,523.90, 20,280.42 and 5,621.04 is: 8,429.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,523.90 : 20,280.42 = 5,621.04 : x
  2. Step 2: Convert to fraction form
    13,523.90/20,280.42 = 5,621.04/x
  3. Step 3: Cross multiply
    13,523.90x = 20,280.42 × 5,621.04
  4. Step 4: Simplify right side
    13,523.90x = 113,997,052.04
  5. Step 5: Solve for x
    x = 113,997,052.04/13,523.90
  6. Step 6: Final answer
    x = 8,429.31

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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.