Home / 12,125.16-16,732.64-6,819.95

Finding the Fourth Proportional to 12,125.16, 16,732.64 and 6,819.95

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Solution

The fourth proportional to 12,125.16, 16,732.64 and 6,819.95 is: 9,411.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.16 : 16,732.64 = 6,819.95 : x
  2. Step 2: Convert to fraction form
    12,125.16/16,732.64 = 6,819.95/x
  3. Step 3: Cross multiply
    12,125.16x = 16,732.64 × 6,819.95
  4. Step 4: Simplify right side
    12,125.16x = 114,115,827.05
  5. Step 5: Solve for x
    x = 114,115,827.05/12,125.16
  6. Step 6: Final answer
    x = 9,411.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.