Home / 13,687.85-20,523.21-6,282.80

Finding the Fourth Proportional to 13,687.85, 20,523.21 and 6,282.80

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Solution

The fourth proportional to 13,687.85, 20,523.21 and 6,282.80 is: 9,420.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.85 : 20,523.21 = 6,282.80 : x
  2. Step 2: Convert to fraction form
    13,687.85/20,523.21 = 6,282.80/x
  3. Step 3: Cross multiply
    13,687.85x = 20,523.21 × 6,282.80
  4. Step 4: Simplify right side
    13,687.85x = 128,943,174.57
  5. Step 5: Solve for x
    x = 128,943,174.57/13,687.85
  6. Step 6: Final answer
    x = 9,420.26

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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.