Home / 20,124.88-30,187.30-13,197.76

Finding the Fourth Proportional to 20,124.88, 30,187.30 and 13,197.76

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Solution

The fourth proportional to 20,124.88, 30,187.30 and 13,197.76 is: 19,796.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.88 : 30,187.30 = 13,197.76 : x
  2. Step 2: Convert to fraction form
    20,124.88/30,187.30 = 13,197.76/x
  3. Step 3: Cross multiply
    20,124.88x = 30,187.30 × 13,197.76
  4. Step 4: Simplify right side
    20,124.88x = 398,404,740.45
  5. Step 5: Solve for x
    x = 398,404,740.45/20,124.88
  6. Step 6: Final answer
    x = 19,796.63

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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.