Home / 20,494.76-28,285.92-12,429.72

Finding the Fourth Proportional to 20,494.76, 28,285.92 and 12,429.72

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Solution

The fourth proportional to 20,494.76, 28,285.92 and 12,429.72 is: 17,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.76 : 28,285.92 = 12,429.72 : x
  2. Step 2: Convert to fraction form
    20,494.76/28,285.92 = 12,429.72/x
  3. Step 3: Cross multiply
    20,494.76x = 28,285.92 × 12,429.72
  4. Step 4: Simplify right side
    20,494.76x = 351,586,065.54
  5. Step 5: Solve for x
    x = 351,586,065.54/20,494.76
  6. Step 6: Final answer
    x = 17,154.93

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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.