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Finding the Fourth Proportional to 20,326.95, 30,505.01 and 8,648.37

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Solution

The fourth proportional to 20,326.95, 30,505.01 and 8,648.37 is: 12,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.95 : 30,505.01 = 8,648.37 : x
  2. Step 2: Convert to fraction form
    20,326.95/30,505.01 = 8,648.37/x
  3. Step 3: Cross multiply
    20,326.95x = 30,505.01 × 8,648.37
  4. Step 4: Simplify right side
    20,326.95x = 263,818,570.09
  5. Step 5: Solve for x
    x = 263,818,570.09/20,326.95
  6. Step 6: Final answer
    x = 12,978.76

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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.