Home / 18,730.20-28,095.06-5,403.60

Finding the Fourth Proportional to 18,730.20, 28,095.06 and 5,403.60

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Solution

The fourth proportional to 18,730.20, 28,095.06 and 5,403.60 is: 8,105.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.20 : 28,095.06 = 5,403.60 : x
  2. Step 2: Convert to fraction form
    18,730.20/28,095.06 = 5,403.60/x
  3. Step 3: Cross multiply
    18,730.20x = 28,095.06 × 5,403.60
  4. Step 4: Simplify right side
    18,730.20x = 151,814,466.22
  5. Step 5: Solve for x
    x = 151,814,466.22/18,730.20
  6. Step 6: Final answer
    x = 8,105.33

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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.