Home / 20,486.04-28,267.78-11,869

Finding the Fourth Proportional to 20,486.04, 28,267.78 and 11,869

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Solution

The fourth proportional to 20,486.04, 28,267.78 and 11,869 is: 16,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.04 : 28,267.78 = 11,869 : x
  2. Step 2: Convert to fraction form
    20,486.04/28,267.78 = 11,869/x
  3. Step 3: Cross multiply
    20,486.04x = 28,267.78 × 11,869
  4. Step 4: Simplify right side
    20,486.04x = 335,510,280.82
  5. Step 5: Solve for x
    x = 335,510,280.82/20,486.04
  6. Step 6: Final answer
    x = 16,377.51

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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.