Home / 20,812.14-31,226.04-12,497.94

Finding the Fourth Proportional to 20,812.14, 31,226.04 and 12,497.94

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Solution

The fourth proportional to 20,812.14, 31,226.04 and 12,497.94 is: 18,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.14 : 31,226.04 = 12,497.94 : x
  2. Step 2: Convert to fraction form
    20,812.14/31,226.04 = 12,497.94/x
  3. Step 3: Cross multiply
    20,812.14x = 31,226.04 × 12,497.94
  4. Step 4: Simplify right side
    20,812.14x = 390,261,174.36
  5. Step 5: Solve for x
    x = 390,261,174.36/20,812.14
  6. Step 6: Final answer
    x = 18,751.61

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1.5x scale

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.