Home / 13,521.87-20,285.10-4,161.65

Finding the Fourth Proportional to 13,521.87, 20,285.10 and 4,161.65

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Solution

The fourth proportional to 13,521.87, 20,285.10 and 4,161.65 is: 6,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.87 : 20,285.10 = 4,161.65 : x
  2. Step 2: Convert to fraction form
    13,521.87/20,285.10 = 4,161.65/x
  3. Step 3: Cross multiply
    13,521.87x = 20,285.10 × 4,161.65
  4. Step 4: Simplify right side
    13,521.87x = 84,419,384.99
  5. Step 5: Solve for x
    x = 84,419,384.99/13,521.87
  6. Step 6: Final answer
    x = 6,243.17

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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.