Home / 19,115.72-28,677.18-8,585.49

Finding the Fourth Proportional to 19,115.72, 28,677.18 and 8,585.49

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Solution

The fourth proportional to 19,115.72, 28,677.18 and 8,585.49 is: 12,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.72 : 28,677.18 = 8,585.49 : x
  2. Step 2: Convert to fraction form
    19,115.72/28,677.18 = 8,585.49/x
  3. Step 3: Cross multiply
    19,115.72x = 28,677.18 × 8,585.49
  4. Step 4: Simplify right side
    19,115.72x = 246,207,642.12
  5. Step 5: Solve for x
    x = 246,207,642.12/19,115.72
  6. Step 6: Final answer
    x = 12,879.85

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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.