Home / 20,505.88-30,732.54-11,150.20

Finding the Fourth Proportional to 20,505.88, 30,732.54 and 11,150.20

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Solution

The fourth proportional to 20,505.88, 30,732.54 and 11,150.20 is: 16,711.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.88 : 30,732.54 = 11,150.20 : x
  2. Step 2: Convert to fraction form
    20,505.88/30,732.54 = 11,150.20/x
  3. Step 3: Cross multiply
    20,505.88x = 30,732.54 × 11,150.20
  4. Step 4: Simplify right side
    20,505.88x = 342,673,967.51
  5. Step 5: Solve for x
    x = 342,673,967.51/20,505.88
  6. Step 6: Final answer
    x = 16,711.01

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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.