Home / 20,597.24-30,891.12-12,279.60

Finding the Fourth Proportional to 20,597.24, 30,891.12 and 12,279.60

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Solution

The fourth proportional to 20,597.24, 30,891.12 and 12,279.60 is: 18,416.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.24 : 30,891.12 = 12,279.60 : x
  2. Step 2: Convert to fraction form
    20,597.24/30,891.12 = 12,279.60/x
  3. Step 3: Cross multiply
    20,597.24x = 30,891.12 × 12,279.60
  4. Step 4: Simplify right side
    20,597.24x = 379,330,597.15
  5. Step 5: Solve for x
    x = 379,330,597.15/20,597.24
  6. Step 6: Final answer
    x = 18,416.57

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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.