Home / 18,825.04-28,239.74-6,340.78

Finding the Fourth Proportional to 18,825.04, 28,239.74 and 6,340.78

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Solution

The fourth proportional to 18,825.04, 28,239.74 and 6,340.78 is: 9,511.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.04 : 28,239.74 = 6,340.78 : x
  2. Step 2: Convert to fraction form
    18,825.04/28,239.74 = 6,340.78/x
  3. Step 3: Cross multiply
    18,825.04x = 28,239.74 × 6,340.78
  4. Step 4: Simplify right side
    18,825.04x = 179,061,978.60
  5. Step 5: Solve for x
    x = 179,061,978.60/18,825.04
  6. Step 6: Final answer
    x = 9,511.90

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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.