Home / 20,969.46-31,455.41-6,178.86

Finding the Fourth Proportional to 20,969.46, 31,455.41 and 6,178.86

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Solution

The fourth proportional to 20,969.46, 31,455.41 and 6,178.86 is: 9,268.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.46 : 31,455.41 = 6,178.86 : x
  2. Step 2: Convert to fraction form
    20,969.46/31,455.41 = 6,178.86/x
  3. Step 3: Cross multiply
    20,969.46x = 31,455.41 × 6,178.86
  4. Step 4: Simplify right side
    20,969.46x = 194,358,543.74
  5. Step 5: Solve for x
    x = 194,358,543.74/20,969.46
  6. Step 6: Final answer
    x = 9,268.65

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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.