Home / 18,627.21-27,940.80-5,479.58

Finding the Fourth Proportional to 18,627.21, 27,940.80 and 5,479.58

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Solution

The fourth proportional to 18,627.21, 27,940.80 and 5,479.58 is: 8,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.21 : 27,940.80 = 5,479.58 : x
  2. Step 2: Convert to fraction form
    18,627.21/27,940.80 = 5,479.58/x
  3. Step 3: Cross multiply
    18,627.21x = 27,940.80 × 5,479.58
  4. Step 4: Simplify right side
    18,627.21x = 153,103,848.86
  5. Step 5: Solve for x
    x = 153,103,848.86/18,627.21
  6. Step 6: Final answer
    x = 8,219.37

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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.