Home / 20,981.75-31,475.70-6,188.74

Finding the Fourth Proportional to 20,981.75, 31,475.70 and 6,188.74

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Solution

The fourth proportional to 20,981.75, 31,475.70 and 6,188.74 is: 9,284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.75 : 31,475.70 = 6,188.74 : x
  2. Step 2: Convert to fraction form
    20,981.75/31,475.70 = 6,188.74/x
  3. Step 3: Cross multiply
    20,981.75x = 31,475.70 × 6,188.74
  4. Step 4: Simplify right side
    20,981.75x = 194,794,923.62
  5. Step 5: Solve for x
    x = 194,794,923.62/20,981.75
  6. Step 6: Final answer
    x = 9,284.02

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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.