Home / 30,683.40-45,998.10-20,790.60

Finding the Fourth Proportional to 30,683.40, 45,998.10 and 20,790.60

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Solution

The fourth proportional to 30,683.40, 45,998.10 and 20,790.60 is: 31,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,683.40 : 45,998.10 = 20,790.60 : x
  2. Step 2: Convert to fraction form
    30,683.40/45,998.10 = 20,790.60/x
  3. Step 3: Cross multiply
    30,683.40x = 45,998.10 × 20,790.60
  4. Step 4: Simplify right side
    30,683.40x = 956,328,097.86
  5. Step 5: Solve for x
    x = 956,328,097.86/30,683.40
  6. Step 6: Final answer
    x = 31,167.61

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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.