Home / 18,818.30-28,227.46-4,779.38

Finding the Fourth Proportional to 18,818.30, 28,227.46 and 4,779.38

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Solution

The fourth proportional to 18,818.30, 28,227.46 and 4,779.38 is: 7,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.30 : 28,227.46 = 4,779.38 : x
  2. Step 2: Convert to fraction form
    18,818.30/28,227.46 = 4,779.38/x
  3. Step 3: Cross multiply
    18,818.30x = 28,227.46 × 4,779.38
  4. Step 4: Simplify right side
    18,818.30x = 134,909,675.26
  5. Step 5: Solve for x
    x = 134,909,675.26/18,818.30
  6. Step 6: Final answer
    x = 7,169.07

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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.