Home / 20,129.61-30,196.98-11,700.03

Finding the Fourth Proportional to 20,129.61, 30,196.98 and 11,700.03

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Solution

The fourth proportional to 20,129.61, 30,196.98 and 11,700.03 is: 17,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.61 : 30,196.98 = 11,700.03 : x
  2. Step 2: Convert to fraction form
    20,129.61/30,196.98 = 11,700.03/x
  3. Step 3: Cross multiply
    20,129.61x = 30,196.98 × 11,700.03
  4. Step 4: Simplify right side
    20,129.61x = 353,305,571.91
  5. Step 5: Solve for x
    x = 353,305,571.91/20,129.61
  6. Step 6: Final answer
    x = 17,551.54

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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.