Home / 20,242.38-30,320.91-12,842.94

Finding the Fourth Proportional to 20,242.38, 30,320.91 and 12,842.94

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Solution

The fourth proportional to 20,242.38, 30,320.91 and 12,842.94 is: 19,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.38 : 30,320.91 = 12,842.94 : x
  2. Step 2: Convert to fraction form
    20,242.38/30,320.91 = 12,842.94/x
  3. Step 3: Cross multiply
    20,242.38x = 30,320.91 × 12,842.94
  4. Step 4: Simplify right side
    20,242.38x = 389,409,627.88
  5. Step 5: Solve for x
    x = 389,409,627.88/20,242.38
  6. Step 6: Final answer
    x = 19,237.34

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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.