Home / 20,770.08-31,164.48-11,285.28

Finding the Fourth Proportional to 20,770.08, 31,164.48 and 11,285.28

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Solution

The fourth proportional to 20,770.08, 31,164.48 and 11,285.28 is: 16,933.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.08 : 31,164.48 = 11,285.28 : x
  2. Step 2: Convert to fraction form
    20,770.08/31,164.48 = 11,285.28/x
  3. Step 3: Cross multiply
    20,770.08x = 31,164.48 × 11,285.28
  4. Step 4: Simplify right side
    20,770.08x = 351,699,882.85
  5. Step 5: Solve for x
    x = 351,699,882.85/20,770.08
  6. Step 6: Final answer
    x = 16,933.01

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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.