Home / 13,479.04-18,589.44-8,761.60

Finding the Fourth Proportional to 13,479.04, 18,589.44 and 8,761.60

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Solution

The fourth proportional to 13,479.04, 18,589.44 and 8,761.60 is: 12,083.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.04 : 18,589.44 = 8,761.60 : x
  2. Step 2: Convert to fraction form
    13,479.04/18,589.44 = 8,761.60/x
  3. Step 3: Cross multiply
    13,479.04x = 18,589.44 × 8,761.60
  4. Step 4: Simplify right side
    13,479.04x = 162,873,237.50
  5. Step 5: Solve for x
    x = 162,873,237.50/13,479.04
  6. Step 6: Final answer
    x = 12,083.44

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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.