Home / 20,945.64-31,423.86-6,155.04

Finding the Fourth Proportional to 20,945.64, 31,423.86 and 6,155.04

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Solution

The fourth proportional to 20,945.64, 31,423.86 and 6,155.04 is: 9,234.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.64 : 31,423.86 = 6,155.04 : x
  2. Step 2: Convert to fraction form
    20,945.64/31,423.86 = 6,155.04/x
  3. Step 3: Cross multiply
    20,945.64x = 31,423.86 × 6,155.04
  4. Step 4: Simplify right side
    20,945.64x = 193,415,115.25
  5. Step 5: Solve for x
    x = 193,415,115.25/20,945.64
  6. Step 6: Final answer
    x = 9,234.15

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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.