Home / 19,286.10-28,907.55-8,190.90

Finding the Fourth Proportional to 19,286.10, 28,907.55 and 8,190.90

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Solution

The fourth proportional to 19,286.10, 28,907.55 and 8,190.90 is: 12,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.10 : 28,907.55 = 8,190.90 : x
  2. Step 2: Convert to fraction form
    19,286.10/28,907.55 = 8,190.90/x
  3. Step 3: Cross multiply
    19,286.10x = 28,907.55 × 8,190.90
  4. Step 4: Simplify right side
    19,286.10x = 236,778,851.30
  5. Step 5: Solve for x
    x = 236,778,851.30/19,286.10
  6. Step 6: Final answer
    x = 12,277.18

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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.