Home / 18,716.23-25,838.91-12,982.04

Finding the Fourth Proportional to 18,716.23, 25,838.91 and 12,982.04

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Solution

The fourth proportional to 18,716.23, 25,838.91 and 12,982.04 is: 17,922.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.23 : 25,838.91 = 12,982.04 : x
  2. Step 2: Convert to fraction form
    18,716.23/25,838.91 = 12,982.04/x
  3. Step 3: Cross multiply
    18,716.23x = 25,838.91 × 12,982.04
  4. Step 4: Simplify right side
    18,716.23x = 335,441,730.88
  5. Step 5: Solve for x
    x = 335,441,730.88/18,716.23
  6. Step 6: Final answer
    x = 17,922.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.