Home / 12,309.02-16,986.47-6,720.02

Finding the Fourth Proportional to 12,309.02, 16,986.47 and 6,720.02

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Solution

The fourth proportional to 12,309.02, 16,986.47 and 6,720.02 is: 9,273.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.02 : 16,986.47 = 6,720.02 : x
  2. Step 2: Convert to fraction form
    12,309.02/16,986.47 = 6,720.02/x
  3. Step 3: Cross multiply
    12,309.02x = 16,986.47 × 6,720.02
  4. Step 4: Simplify right side
    12,309.02x = 114,149,418.13
  5. Step 5: Solve for x
    x = 114,149,418.13/12,309.02
  6. Step 6: Final answer
    x = 9,273.64

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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.