Home / 20,935.24-31,385.21-9,080.09

Finding the Fourth Proportional to 20,935.24, 31,385.21 and 9,080.09

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Solution

The fourth proportional to 20,935.24, 31,385.21 and 9,080.09 is: 13,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.24 : 31,385.21 = 9,080.09 : x
  2. Step 2: Convert to fraction form
    20,935.24/31,385.21 = 9,080.09/x
  3. Step 3: Cross multiply
    20,935.24x = 31,385.21 × 9,080.09
  4. Step 4: Simplify right side
    20,935.24x = 284,980,485.14
  5. Step 5: Solve for x
    x = 284,980,485.14/20,935.24
  6. Step 6: Final answer
    x = 13,612.48

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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.