Home / 20,829.08-31,246.85-6,785.83

Finding the Fourth Proportional to 20,829.08, 31,246.85 and 6,785.83

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Solution

The fourth proportional to 20,829.08, 31,246.85 and 6,785.83 is: 10,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.08 : 31,246.85 = 6,785.83 : x
  2. Step 2: Convert to fraction form
    20,829.08/31,246.85 = 6,785.83/x
  3. Step 3: Cross multiply
    20,829.08x = 31,246.85 × 6,785.83
  4. Step 4: Simplify right side
    20,829.08x = 212,035,925.90
  5. Step 5: Solve for x
    x = 212,035,925.90/20,829.08
  6. Step 6: Final answer
    x = 10,179.81

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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.