Home / 18,910.84-28,356.72-11,015.92

Finding the Fourth Proportional to 18,910.84, 28,356.72 and 11,015.92

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Solution

The fourth proportional to 18,910.84, 28,356.72 and 11,015.92 is: 16,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.84 : 28,356.72 = 11,015.92 : x
  2. Step 2: Convert to fraction form
    18,910.84/28,356.72 = 11,015.92/x
  3. Step 3: Cross multiply
    18,910.84x = 28,356.72 × 11,015.92
  4. Step 4: Simplify right side
    18,910.84x = 312,375,358.98
  5. Step 5: Solve for x
    x = 312,375,358.98/18,910.84
  6. Step 6: Final answer
    x = 16,518.32

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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.