Home / 13,520.84-20,281.37-3,660.21

Finding the Fourth Proportional to 13,520.84, 20,281.37 and 3,660.21

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Solution

The fourth proportional to 13,520.84, 20,281.37 and 3,660.21 is: 5,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.84 : 20,281.37 = 3,660.21 : x
  2. Step 2: Convert to fraction form
    13,520.84/20,281.37 = 3,660.21/x
  3. Step 3: Cross multiply
    13,520.84x = 20,281.37 × 3,660.21
  4. Step 4: Simplify right side
    13,520.84x = 74,234,054.99
  5. Step 5: Solve for x
    x = 74,234,054.99/13,520.84
  6. Step 6: Final answer
    x = 5,490.35

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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.