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Finding the Fourth Proportional to 20,266.59, 27,968.34 and 12,713.22

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Solution

The fourth proportional to 20,266.59, 27,968.34 and 12,713.22 is: 17,544.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.59 : 27,968.34 = 12,713.22 : x
  2. Step 2: Convert to fraction form
    20,266.59/27,968.34 = 12,713.22/x
  3. Step 3: Cross multiply
    20,266.59x = 27,968.34 × 12,713.22
  4. Step 4: Simplify right side
    20,266.59x = 355,567,659.45
  5. Step 5: Solve for x
    x = 355,567,659.45/20,266.59
  6. Step 6: Final answer
    x = 17,544.52

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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.