Home / 13,425.18-20,136.21-3,565.23

Finding the Fourth Proportional to 13,425.18, 20,136.21 and 3,565.23

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Solution

The fourth proportional to 13,425.18, 20,136.21 and 3,565.23 is: 5,347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.18 : 20,136.21 = 3,565.23 : x
  2. Step 2: Convert to fraction form
    13,425.18/20,136.21 = 3,565.23/x
  3. Step 3: Cross multiply
    13,425.18x = 20,136.21 × 3,565.23
  4. Step 4: Simplify right side
    13,425.18x = 71,790,219.98
  5. Step 5: Solve for x
    x = 71,790,219.98/13,425.18
  6. Step 6: Final answer
    x = 5,347.43

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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.