Home / 20,187.46-30,281.37-7,039.81

Finding the Fourth Proportional to 20,187.46, 30,281.37 and 7,039.81

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Solution

The fourth proportional to 20,187.46, 30,281.37 and 7,039.81 is: 10,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.46 : 30,281.37 = 7,039.81 : x
  2. Step 2: Convert to fraction form
    20,187.46/30,281.37 = 7,039.81/x
  3. Step 3: Cross multiply
    20,187.46x = 30,281.37 × 7,039.81
  4. Step 4: Simplify right side
    20,187.46x = 213,175,091.34
  5. Step 5: Solve for x
    x = 213,175,091.34/20,187.46
  6. Step 6: Final answer
    x = 10,559.78

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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.