Home / 20,109.56-30,115.10-14,171.85

Finding the Fourth Proportional to 20,109.56, 30,115.10 and 14,171.85

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Solution

The fourth proportional to 20,109.56, 30,115.10 and 14,171.85 is: 21,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.56 : 30,115.10 = 14,171.85 : x
  2. Step 2: Convert to fraction form
    20,109.56/30,115.10 = 14,171.85/x
  3. Step 3: Cross multiply
    20,109.56x = 30,115.10 × 14,171.85
  4. Step 4: Simplify right side
    20,109.56x = 426,786,715.36
  5. Step 5: Solve for x
    x = 426,786,715.36/20,109.56
  6. Step 6: Final answer
    x = 21,223.08

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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.