Home / 26,929.63-40,362.81-12,121.21

Finding the Fourth Proportional to 26,929.63, 40,362.81 and 12,121.21

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Solution

The fourth proportional to 26,929.63, 40,362.81 and 12,121.21 is: 18,167.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,929.63 : 40,362.81 = 12,121.21 : x
  2. Step 2: Convert to fraction form
    26,929.63/40,362.81 = 12,121.21/x
  3. Step 3: Cross multiply
    26,929.63x = 40,362.81 × 12,121.21
  4. Step 4: Simplify right side
    26,929.63x = 489,246,096.20
  5. Step 5: Solve for x
    x = 489,246,096.20/26,929.63
  6. Step 6: Final answer
    x = 18,167.58

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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.