Home / 13,384.32-20,080.32-5,589.12

Finding the Fourth Proportional to 13,384.32, 20,080.32 and 5,589.12

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Solution

The fourth proportional to 13,384.32, 20,080.32 and 5,589.12 is: 8,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.32 : 20,080.32 = 5,589.12 : x
  2. Step 2: Convert to fraction form
    13,384.32/20,080.32 = 5,589.12/x
  3. Step 3: Cross multiply
    13,384.32x = 20,080.32 × 5,589.12
  4. Step 4: Simplify right side
    13,384.32x = 112,231,318.12
  5. Step 5: Solve for x
    x = 112,231,318.12/13,384.32
  6. Step 6: Final answer
    x = 8,385.28

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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.