Home / 13,385.38-20,080.79-4,619.15

Finding the Fourth Proportional to 13,385.38, 20,080.79 and 4,619.15

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Solution

The fourth proportional to 13,385.38, 20,080.79 and 4,619.15 is: 6,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.38 : 20,080.79 = 4,619.15 : x
  2. Step 2: Convert to fraction form
    13,385.38/20,080.79 = 4,619.15/x
  3. Step 3: Cross multiply
    13,385.38x = 20,080.79 × 4,619.15
  4. Step 4: Simplify right side
    13,385.38x = 92,756,181.13
  5. Step 5: Solve for x
    x = 92,756,181.13/13,385.38
  6. Step 6: Final answer
    x = 6,929.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.