Home / 20,175.86-30,246.78-9,639.92

Finding the Fourth Proportional to 20,175.86, 30,246.78 and 9,639.92

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Solution

The fourth proportional to 20,175.86, 30,246.78 and 9,639.92 is: 14,451.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.86 : 30,246.78 = 9,639.92 : x
  2. Step 2: Convert to fraction form
    20,175.86/30,246.78 = 9,639.92/x
  3. Step 3: Cross multiply
    20,175.86x = 30,246.78 × 9,639.92
  4. Step 4: Simplify right side
    20,175.86x = 291,576,539.46
  5. Step 5: Solve for x
    x = 291,576,539.46/20,175.86
  6. Step 6: Final answer
    x = 14,451.75

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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.