Home / 20,775.89-31,137.14-18,096.48

Finding the Fourth Proportional to 20,775.89, 31,137.14 and 18,096.48

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Solution

The fourth proportional to 20,775.89, 31,137.14 and 18,096.48 is: 27,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.89 : 31,137.14 = 18,096.48 : x
  2. Step 2: Convert to fraction form
    20,775.89/31,137.14 = 18,096.48/x
  3. Step 3: Cross multiply
    20,775.89x = 31,137.14 × 18,096.48
  4. Step 4: Simplify right side
    20,775.89x = 563,472,676.51
  5. Step 5: Solve for x
    x = 563,472,676.51/20,775.89
  6. Step 6: Final answer
    x = 27,121.47

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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.