Home / 20,127.46-27,771.74-12,170.02

Finding the Fourth Proportional to 20,127.46, 27,771.74 and 12,170.02

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Solution

The fourth proportional to 20,127.46, 27,771.74 and 12,170.02 is: 16,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.46 : 27,771.74 = 12,170.02 : x
  2. Step 2: Convert to fraction form
    20,127.46/27,771.74 = 12,170.02/x
  3. Step 3: Cross multiply
    20,127.46x = 27,771.74 × 12,170.02
  4. Step 4: Simplify right side
    20,127.46x = 337,982,631.23
  5. Step 5: Solve for x
    x = 337,982,631.23/20,127.46
  6. Step 6: Final answer
    x = 16,792.12

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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.