Home / 18,818.07-28,227.11-4,779.15

Finding the Fourth Proportional to 18,818.07, 28,227.11 and 4,779.15

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Solution

The fourth proportional to 18,818.07, 28,227.11 and 4,779.15 is: 7,168.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.07 : 28,227.11 = 4,779.15 : x
  2. Step 2: Convert to fraction form
    18,818.07/28,227.11 = 4,779.15/x
  3. Step 3: Cross multiply
    18,818.07x = 28,227.11 × 4,779.15
  4. Step 4: Simplify right side
    18,818.07x = 134,901,451.62
  5. Step 5: Solve for x
    x = 134,901,451.62/18,818.07
  6. Step 6: Final answer
    x = 7,168.72

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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.