Home / 14,315.90-21,474.39-3,928.46

Finding the Fourth Proportional to 14,315.90, 21,474.39 and 3,928.46

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Solution

The fourth proportional to 14,315.90, 21,474.39 and 3,928.46 is: 5,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,315.90 : 21,474.39 = 3,928.46 : x
  2. Step 2: Convert to fraction form
    14,315.90/21,474.39 = 3,928.46/x
  3. Step 3: Cross multiply
    14,315.90x = 21,474.39 × 3,928.46
  4. Step 4: Simplify right side
    14,315.90x = 84,361,282.14
  5. Step 5: Solve for x
    x = 84,361,282.14/14,315.90
  6. Step 6: Final answer
    x = 5,892.84

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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.