Home / 18,729.58-28,095.60-5,580.86

Finding the Fourth Proportional to 18,729.58, 28,095.60 and 5,580.86

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Solution

The fourth proportional to 18,729.58, 28,095.60 and 5,580.86 is: 8,371.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.58 : 28,095.60 = 5,580.86 : x
  2. Step 2: Convert to fraction form
    18,729.58/28,095.60 = 5,580.86/x
  3. Step 3: Cross multiply
    18,729.58x = 28,095.60 × 5,580.86
  4. Step 4: Simplify right side
    18,729.58x = 156,797,610.22
  5. Step 5: Solve for x
    x = 156,797,610.22/18,729.58
  6. Step 6: Final answer
    x = 8,371.66

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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.