Home / 20,908.26-31,354.29-7,757.64

Finding the Fourth Proportional to 20,908.26, 31,354.29 and 7,757.64

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Solution

The fourth proportional to 20,908.26, 31,354.29 and 7,757.64 is: 11,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.26 : 31,354.29 = 7,757.64 : x
  2. Step 2: Convert to fraction form
    20,908.26/31,354.29 = 7,757.64/x
  3. Step 3: Cross multiply
    20,908.26x = 31,354.29 × 7,757.64
  4. Step 4: Simplify right side
    20,908.26x = 243,235,294.28
  5. Step 5: Solve for x
    x = 243,235,294.28/20,908.26
  6. Step 6: Final answer
    x = 11,633.45

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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.