Home / 20,678.34-31,019.58-6,634.86

Finding the Fourth Proportional to 20,678.34, 31,019.58 and 6,634.86

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Solution

The fourth proportional to 20,678.34, 31,019.58 and 6,634.86 is: 9,952.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.34 : 31,019.58 = 6,634.86 : x
  2. Step 2: Convert to fraction form
    20,678.34/31,019.58 = 6,634.86/x
  3. Step 3: Cross multiply
    20,678.34x = 31,019.58 × 6,634.86
  4. Step 4: Simplify right side
    20,678.34x = 205,810,570.56
  5. Step 5: Solve for x
    x = 205,810,570.56/20,678.34
  6. Step 6: Final answer
    x = 9,952.95

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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.