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Finding the Fourth Proportional to 13,984.88, 20,957.72 and 6,958.23

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Solution

The fourth proportional to 13,984.88, 20,957.72 and 6,958.23 is: 10,427.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.88 : 20,957.72 = 6,958.23 : x
  2. Step 2: Convert to fraction form
    13,984.88/20,957.72 = 6,958.23/x
  3. Step 3: Cross multiply
    13,984.88x = 20,957.72 × 6,958.23
  4. Step 4: Simplify right side
    13,984.88x = 145,828,496.46
  5. Step 5: Solve for x
    x = 145,828,496.46/13,984.88
  6. Step 6: Final answer
    x = 10,427.59

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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.