Home / 12,680.70-18,929.42-11,125.50

Finding the Fourth Proportional to 12,680.70, 18,929.42 and 11,125.50

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Solution

The fourth proportional to 12,680.70, 18,929.42 and 11,125.50 is: 16,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.70 : 18,929.42 = 11,125.50 : x
  2. Step 2: Convert to fraction form
    12,680.70/18,929.42 = 11,125.50/x
  3. Step 3: Cross multiply
    12,680.70x = 18,929.42 × 11,125.50
  4. Step 4: Simplify right side
    12,680.70x = 210,599,262.21
  5. Step 5: Solve for x
    x = 210,599,262.21/12,680.70
  6. Step 6: Final answer
    x = 16,607.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.