Home / 20,963.72-31,446.36-6,172.64

Finding the Fourth Proportional to 20,963.72, 31,446.36 and 6,172.64

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Solution

The fourth proportional to 20,963.72, 31,446.36 and 6,172.64 is: 9,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.72 : 31,446.36 = 6,172.64 : x
  2. Step 2: Convert to fraction form
    20,963.72/31,446.36 = 6,172.64/x
  3. Step 3: Cross multiply
    20,963.72x = 31,446.36 × 6,172.64
  4. Step 4: Simplify right side
    20,963.72x = 194,107,059.59
  5. Step 5: Solve for x
    x = 194,107,059.59/20,963.72
  6. Step 6: Final answer
    x = 9,259.19

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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.