Home / 18,767.90-28,151.96-5,620.39

Finding the Fourth Proportional to 18,767.90, 28,151.96 and 5,620.39

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Solution

The fourth proportional to 18,767.90, 28,151.96 and 5,620.39 is: 8,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.90 : 28,151.96 = 5,620.39 : x
  2. Step 2: Convert to fraction form
    18,767.90/28,151.96 = 5,620.39/x
  3. Step 3: Cross multiply
    18,767.90x = 28,151.96 × 5,620.39
  4. Step 4: Simplify right side
    18,767.90x = 158,224,895.98
  5. Step 5: Solve for x
    x = 158,224,895.98/18,767.90
  6. Step 6: Final answer
    x = 8,430.61

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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.