Home / 13,521.84-20,282.87-3,661.21

Finding the Fourth Proportional to 13,521.84, 20,282.87 and 3,661.21

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Solution

The fourth proportional to 13,521.84, 20,282.87 and 3,661.21 is: 5,491.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.84 : 20,282.87 = 3,661.21 : x
  2. Step 2: Convert to fraction form
    13,521.84/20,282.87 = 3,661.21/x
  3. Step 3: Cross multiply
    13,521.84x = 20,282.87 × 3,661.21
  4. Step 4: Simplify right side
    13,521.84x = 74,259,846.47
  5. Step 5: Solve for x
    x = 74,259,846.47/13,521.84
  6. Step 6: Final answer
    x = 5,491.84

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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.