Home / 11,989.02-16,546.77-8,642.91

Finding the Fourth Proportional to 11,989.02, 16,546.77 and 8,642.91

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Solution

The fourth proportional to 11,989.02, 16,546.77 and 8,642.91 is: 11,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.02 : 16,546.77 = 8,642.91 : x
  2. Step 2: Convert to fraction form
    11,989.02/16,546.77 = 8,642.91/x
  3. Step 3: Cross multiply
    11,989.02x = 16,546.77 × 8,642.91
  4. Step 4: Simplify right side
    11,989.02x = 143,012,243.90
  5. Step 5: Solve for x
    x = 143,012,243.90/11,989.02
  6. Step 6: Final answer
    x = 11,928.60

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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.