Home / 18,911.96-28,369.02-5,586.38

Finding the Fourth Proportional to 18,911.96, 28,369.02 and 5,586.38

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Solution

The fourth proportional to 18,911.96, 28,369.02 and 5,586.38 is: 8,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.96 : 28,369.02 = 5,586.38 : x
  2. Step 2: Convert to fraction form
    18,911.96/28,369.02 = 5,586.38/x
  3. Step 3: Cross multiply
    18,911.96x = 28,369.02 × 5,586.38
  4. Step 4: Simplify right side
    18,911.96x = 158,480,125.95
  5. Step 5: Solve for x
    x = 158,480,125.95/18,911.96
  6. Step 6: Final answer
    x = 8,379.89

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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.