Home / 18,818.75-28,228.14-4,779.83

Finding the Fourth Proportional to 18,818.75, 28,228.14 and 4,779.83

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Solution

The fourth proportional to 18,818.75, 28,228.14 and 4,779.83 is: 7,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.75 : 28,228.14 = 4,779.83 : x
  2. Step 2: Convert to fraction form
    18,818.75/28,228.14 = 4,779.83/x
  3. Step 3: Cross multiply
    18,818.75x = 28,228.14 × 4,779.83
  4. Step 4: Simplify right side
    18,818.75x = 134,925,710.42
  5. Step 5: Solve for x
    x = 134,925,710.42/18,818.75
  6. Step 6: Final answer
    x = 7,169.75

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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.