Home / 10,785.83-16,178.73-3,390.93

Finding the Fourth Proportional to 10,785.83, 16,178.73 and 3,390.93

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Solution

The fourth proportional to 10,785.83, 16,178.73 and 3,390.93 is: 5,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,785.83 : 16,178.73 = 3,390.93 : x
  2. Step 2: Convert to fraction form
    10,785.83/16,178.73 = 3,390.93/x
  3. Step 3: Cross multiply
    10,785.83x = 16,178.73 × 3,390.93
  4. Step 4: Simplify right side
    10,785.83x = 54,860,928.20
  5. Step 5: Solve for x
    x = 54,860,928.20/10,785.83
  6. Step 6: Final answer
    x = 5,086.39

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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.