Home / 20,274.40-30,338.70-18,524.80

Finding the Fourth Proportional to 20,274.40, 30,338.70 and 18,524.80

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Solution

The fourth proportional to 20,274.40, 30,338.70 and 18,524.80 is: 27,720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.40 : 30,338.70 = 18,524.80 : x
  2. Step 2: Convert to fraction form
    20,274.40/30,338.70 = 18,524.80/x
  3. Step 3: Cross multiply
    20,274.40x = 30,338.70 × 18,524.80
  4. Step 4: Simplify right side
    20,274.40x = 562,018,349.76
  5. Step 5: Solve for x
    x = 562,018,349.76/20,274.40
  6. Step 6: Final answer
    x = 27,720.59

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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.