Home / 14,479.03-19,980.13-8,104.55

Finding the Fourth Proportional to 14,479.03, 19,980.13 and 8,104.55

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Solution

The fourth proportional to 14,479.03, 19,980.13 and 8,104.55 is: 11,183.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.03 : 19,980.13 = 8,104.55 : x
  2. Step 2: Convert to fraction form
    14,479.03/19,980.13 = 8,104.55/x
  3. Step 3: Cross multiply
    14,479.03x = 19,980.13 × 8,104.55
  4. Step 4: Simplify right side
    14,479.03x = 161,929,962.59
  5. Step 5: Solve for x
    x = 161,929,962.59/14,479.03
  6. Step 6: Final answer
    x = 11,183.76

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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.