Home / 14,986.27-20,681.40-8,272

Finding the Fourth Proportional to 14,986.27, 20,681.40 and 8,272

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Solution

The fourth proportional to 14,986.27, 20,681.40 and 8,272 is: 11,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.27 : 20,681.40 = 8,272 : x
  2. Step 2: Convert to fraction form
    14,986.27/20,681.40 = 8,272/x
  3. Step 3: Cross multiply
    14,986.27x = 20,681.40 × 8,272
  4. Step 4: Simplify right side
    14,986.27x = 171,076,540.80
  5. Step 5: Solve for x
    x = 171,076,540.80/14,986.27
  6. Step 6: Final answer
    x = 11,415.55

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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.