Home / 20,242.91-27,933.95-11,290.99

Finding the Fourth Proportional to 20,242.91, 27,933.95 and 11,290.99

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Solution

The fourth proportional to 20,242.91, 27,933.95 and 11,290.99 is: 15,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.91 : 27,933.95 = 11,290.99 : x
  2. Step 2: Convert to fraction form
    20,242.91/27,933.95 = 11,290.99/x
  3. Step 3: Cross multiply
    20,242.91x = 27,933.95 × 11,290.99
  4. Step 4: Simplify right side
    20,242.91x = 315,401,893.66
  5. Step 5: Solve for x
    x = 315,401,893.66/20,242.91
  6. Step 6: Final answer
    x = 15,580.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.