Home / 20,121.10-27,750.37-15,096.47

Finding the Fourth Proportional to 20,121.10, 27,750.37 and 15,096.47

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Solution

The fourth proportional to 20,121.10, 27,750.37 and 15,096.47 is: 20,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.10 : 27,750.37 = 15,096.47 : x
  2. Step 2: Convert to fraction form
    20,121.10/27,750.37 = 15,096.47/x
  3. Step 3: Cross multiply
    20,121.10x = 27,750.37 × 15,096.47
  4. Step 4: Simplify right side
    20,121.10x = 418,932,628.19
  5. Step 5: Solve for x
    x = 418,932,628.19/20,121.10
  6. Step 6: Final answer
    x = 20,820.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.