Home / 20,111.79-30,172.01-6,072.87

Finding the Fourth Proportional to 20,111.79, 30,172.01 and 6,072.87

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Solution

The fourth proportional to 20,111.79, 30,172.01 and 6,072.87 is: 9,110.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.79 : 30,172.01 = 6,072.87 : x
  2. Step 2: Convert to fraction form
    20,111.79/30,172.01 = 6,072.87/x
  3. Step 3: Cross multiply
    20,111.79x = 30,172.01 × 6,072.87
  4. Step 4: Simplify right side
    20,111.79x = 183,230,664.00
  5. Step 5: Solve for x
    x = 183,230,664.00/20,111.79
  6. Step 6: Final answer
    x = 9,110.61

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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.