Home / 13,703.46-20,555.19-3,315.21

Finding the Fourth Proportional to 13,703.46, 20,555.19 and 3,315.21

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Solution

The fourth proportional to 13,703.46, 20,555.19 and 3,315.21 is: 4,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.46 : 20,555.19 = 3,315.21 : x
  2. Step 2: Convert to fraction form
    13,703.46/20,555.19 = 3,315.21/x
  3. Step 3: Cross multiply
    13,703.46x = 20,555.19 × 3,315.21
  4. Step 4: Simplify right side
    13,703.46x = 68,144,771.44
  5. Step 5: Solve for x
    x = 68,144,771.44/13,703.46
  6. Step 6: Final answer
    x = 4,972.82

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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.