Home / 20,857.19-31,304.01-12,080.03

Finding the Fourth Proportional to 20,857.19, 31,304.01 and 12,080.03

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Solution

The fourth proportional to 20,857.19, 31,304.01 and 12,080.03 is: 18,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.19 : 31,304.01 = 12,080.03 : x
  2. Step 2: Convert to fraction form
    20,857.19/31,304.01 = 12,080.03/x
  3. Step 3: Cross multiply
    20,857.19x = 31,304.01 × 12,080.03
  4. Step 4: Simplify right side
    20,857.19x = 378,153,379.92
  5. Step 5: Solve for x
    x = 378,153,379.92/20,857.19
  6. Step 6: Final answer
    x = 18,130.60

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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.