Home / 10,785.21-16,177.66-3,390.12

Finding the Fourth Proportional to 10,785.21, 16,177.66 and 3,390.12

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Solution

The fourth proportional to 10,785.21, 16,177.66 and 3,390.12 is: 5,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.21 : 16,177.66 = 3,390.12 : x
  2. Step 2: Convert to fraction form
    10,785.21/16,177.66 = 3,390.12/x
  3. Step 3: Cross multiply
    10,785.21x = 16,177.66 × 3,390.12
  4. Step 4: Simplify right side
    10,785.21x = 54,844,208.72
  5. Step 5: Solve for x
    x = 54,844,208.72/10,785.21
  6. Step 6: Final answer
    x = 5,085.13

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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.