Home / 12,511-18,766.50-4,717.99

Finding the Fourth Proportional to 12,511, 18,766.50 and 4,717.99

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Solution

The fourth proportional to 12,511, 18,766.50 and 4,717.99 is: 7,076.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511 : 18,766.50 = 4,717.99 : x
  2. Step 2: Convert to fraction form
    12,511/18,766.50 = 4,717.99/x
  3. Step 3: Cross multiply
    12,511x = 18,766.50 × 4,717.99
  4. Step 4: Simplify right side
    12,511x = 88,540,159.34
  5. Step 5: Solve for x
    x = 88,540,159.34/12,511
  6. Step 6: Final answer
    x = 7,076.99

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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.