Home / 13,678.32-20,512.69-3,814.95

Finding the Fourth Proportional to 13,678.32, 20,512.69 and 3,814.95

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Solution

The fourth proportional to 13,678.32, 20,512.69 and 3,814.95 is: 5,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.32 : 20,512.69 = 3,814.95 : x
  2. Step 2: Convert to fraction form
    13,678.32/20,512.69 = 3,814.95/x
  3. Step 3: Cross multiply
    13,678.32x = 20,512.69 × 3,814.95
  4. Step 4: Simplify right side
    13,678.32x = 78,254,860.18
  5. Step 5: Solve for x
    x = 78,254,860.18/13,678.32
  6. Step 6: Final answer
    x = 5,721.09

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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.