Home / 20,621.06-30,931.60-11,850.38

Finding the Fourth Proportional to 20,621.06, 30,931.60 and 11,850.38

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Solution

The fourth proportional to 20,621.06, 30,931.60 and 11,850.38 is: 17,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.06 : 30,931.60 = 11,850.38 : x
  2. Step 2: Convert to fraction form
    20,621.06/30,931.60 = 11,850.38/x
  3. Step 3: Cross multiply
    20,621.06x = 30,931.60 × 11,850.38
  4. Step 4: Simplify right side
    20,621.06x = 366,551,214.01
  5. Step 5: Solve for x
    x = 366,551,214.01/20,621.06
  6. Step 6: Final answer
    x = 17,775.58

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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.