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Finding the Fourth Proportional to 20,495.14, 30,750.04 and 8,651.86

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Solution

The fourth proportional to 20,495.14, 30,750.04 and 8,651.86 is: 12,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.14 : 30,750.04 = 8,651.86 : x
  2. Step 2: Convert to fraction form
    20,495.14/30,750.04 = 8,651.86/x
  3. Step 3: Cross multiply
    20,495.14x = 30,750.04 × 8,651.86
  4. Step 4: Simplify right side
    20,495.14x = 266,045,041.07
  5. Step 5: Solve for x
    x = 266,045,041.07/20,495.14
  6. Step 6: Final answer
    x = 12,980.88

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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.