Home / 20,933.56-31,397.10-19,776.88

Finding the Fourth Proportional to 20,933.56, 31,397.10 and 19,776.88

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Solution

The fourth proportional to 20,933.56, 31,397.10 and 19,776.88 is: 29,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.56 : 31,397.10 = 19,776.88 : x
  2. Step 2: Convert to fraction form
    20,933.56/31,397.10 = 19,776.88/x
  3. Step 3: Cross multiply
    20,933.56x = 31,397.10 × 19,776.88
  4. Step 4: Simplify right side
    20,933.56x = 620,936,679.05
  5. Step 5: Solve for x
    x = 620,936,679.05/20,933.56
  6. Step 6: Final answer
    x = 29,662.26

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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.