Home / 20,804.48-28,707.96-12,306.92

Finding the Fourth Proportional to 20,804.48, 28,707.96 and 12,306.92

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Solution

The fourth proportional to 20,804.48, 28,707.96 and 12,306.92 is: 16,982.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.48 : 28,707.96 = 12,306.92 : x
  2. Step 2: Convert to fraction form
    20,804.48/28,707.96 = 12,306.92/x
  3. Step 3: Cross multiply
    20,804.48x = 28,707.96 × 12,306.92
  4. Step 4: Simplify right side
    20,804.48x = 353,306,423.54
  5. Step 5: Solve for x
    x = 353,306,423.54/20,804.48
  6. Step 6: Final answer
    x = 16,982.23

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1.5x scale

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.