Home / 19,219.90-28,832.82-8,126.64

Finding the Fourth Proportional to 19,219.90, 28,832.82 and 8,126.64

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Solution

The fourth proportional to 19,219.90, 28,832.82 and 8,126.64 is: 12,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.90 : 28,832.82 = 8,126.64 : x
  2. Step 2: Convert to fraction form
    19,219.90/28,832.82 = 8,126.64/x
  3. Step 3: Cross multiply
    19,219.90x = 28,832.82 × 8,126.64
  4. Step 4: Simplify right side
    19,219.90x = 234,313,948.32
  5. Step 5: Solve for x
    x = 234,313,948.32/19,219.90
  6. Step 6: Final answer
    x = 12,191.22

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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.