Home / 20,737.92-31,032.54-11,929.62

Finding the Fourth Proportional to 20,737.92, 31,032.54 and 11,929.62

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Solution

The fourth proportional to 20,737.92, 31,032.54 and 11,929.62 is: 17,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.92 : 31,032.54 = 11,929.62 : x
  2. Step 2: Convert to fraction form
    20,737.92/31,032.54 = 11,929.62/x
  3. Step 3: Cross multiply
    20,737.92x = 31,032.54 × 11,929.62
  4. Step 4: Simplify right side
    20,737.92x = 370,206,409.83
  5. Step 5: Solve for x
    x = 370,206,409.83/20,737.92
  6. Step 6: Final answer
    x = 17,851.67

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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.