Home / 19,137.24-28,712.04-8,612.90

Finding the Fourth Proportional to 19,137.24, 28,712.04 and 8,612.90

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Solution

The fourth proportional to 19,137.24, 28,712.04 and 8,612.90 is: 12,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.24 : 28,712.04 = 8,612.90 : x
  2. Step 2: Convert to fraction form
    19,137.24/28,712.04 = 8,612.90/x
  3. Step 3: Cross multiply
    19,137.24x = 28,712.04 × 8,612.90
  4. Step 4: Simplify right side
    19,137.24x = 247,293,929.32
  5. Step 5: Solve for x
    x = 247,293,929.32/19,137.24
  6. Step 6: Final answer
    x = 12,922.13

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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.