Home / 18,779.43-28,172.78-5,630.70

Finding the Fourth Proportional to 18,779.43, 28,172.78 and 5,630.70

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Solution

The fourth proportional to 18,779.43, 28,172.78 and 5,630.70 is: 8,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.43 : 28,172.78 = 5,630.70 : x
  2. Step 2: Convert to fraction form
    18,779.43/28,172.78 = 5,630.70/x
  3. Step 3: Cross multiply
    18,779.43x = 28,172.78 × 5,630.70
  4. Step 4: Simplify right side
    18,779.43x = 158,632,472.35
  5. Step 5: Solve for x
    x = 158,632,472.35/18,779.43
  6. Step 6: Final answer
    x = 8,447.14

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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.