Home / 19,221.18-28,832.99-8,125.80

Finding the Fourth Proportional to 19,221.18, 28,832.99 and 8,125.80

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Solution

The fourth proportional to 19,221.18, 28,832.99 and 8,125.80 is: 12,189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.18 : 28,832.99 = 8,125.80 : x
  2. Step 2: Convert to fraction form
    19,221.18/28,832.99 = 8,125.80/x
  3. Step 3: Cross multiply
    19,221.18x = 28,832.99 × 8,125.80
  4. Step 4: Simplify right side
    19,221.18x = 234,291,110.14
  5. Step 5: Solve for x
    x = 234,291,110.14/19,221.18
  6. Step 6: Final answer
    x = 12,189.22

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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.