Home / 19,208.68-28,816.92-8,115.40

Finding the Fourth Proportional to 19,208.68, 28,816.92 and 8,115.40

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Solution

The fourth proportional to 19,208.68, 28,816.92 and 8,115.40 is: 12,174.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.68 : 28,816.92 = 8,115.40 : x
  2. Step 2: Convert to fraction form
    19,208.68/28,816.92 = 8,115.40/x
  3. Step 3: Cross multiply
    19,208.68x = 28,816.92 × 8,115.40
  4. Step 4: Simplify right side
    19,208.68x = 233,860,832.57
  5. Step 5: Solve for x
    x = 233,860,832.57/19,208.68
  6. Step 6: Final answer
    x = 12,174.75

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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.