Home / 13,381.30-20,073.09-3,520.63

Finding the Fourth Proportional to 13,381.30, 20,073.09 and 3,520.63

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Solution

The fourth proportional to 13,381.30, 20,073.09 and 3,520.63 is: 5,281.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.30 : 20,073.09 = 3,520.63 : x
  2. Step 2: Convert to fraction form
    13,381.30/20,073.09 = 3,520.63/x
  3. Step 3: Cross multiply
    13,381.30x = 20,073.09 × 3,520.63
  4. Step 4: Simplify right side
    13,381.30x = 70,669,822.48
  5. Step 5: Solve for x
    x = 70,669,822.48/13,381.30
  6. Step 6: Final answer
    x = 5,281.24

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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.