Home / 10,785.68-16,179.48-3,390.32

Finding the Fourth Proportional to 10,785.68, 16,179.48 and 3,390.32

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Solution

The fourth proportional to 10,785.68, 16,179.48 and 3,390.32 is: 5,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.68 : 16,179.48 = 3,390.32 : x
  2. Step 2: Convert to fraction form
    10,785.68/16,179.48 = 3,390.32/x
  3. Step 3: Cross multiply
    10,785.68x = 16,179.48 × 3,390.32
  4. Step 4: Simplify right side
    10,785.68x = 54,853,614.63
  5. Step 5: Solve for x
    x = 54,853,614.63/10,785.68
  6. Step 6: Final answer
    x = 5,085.78

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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.