Home / 20,470.11-28,252.16-11,855.05

Finding the Fourth Proportional to 20,470.11, 28,252.16 and 11,855.05

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Solution

The fourth proportional to 20,470.11, 28,252.16 and 11,855.05 is: 16,361.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.11 : 28,252.16 = 11,855.05 : x
  2. Step 2: Convert to fraction form
    20,470.11/28,252.16 = 11,855.05/x
  3. Step 3: Cross multiply
    20,470.11x = 28,252.16 × 11,855.05
  4. Step 4: Simplify right side
    20,470.11x = 334,930,568.87
  5. Step 5: Solve for x
    x = 334,930,568.87/20,470.11
  6. Step 6: Final answer
    x = 16,361.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.