Home / 20,513.05-30,738.79-15,826.02

Finding the Fourth Proportional to 20,513.05, 30,738.79 and 15,826.02

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Solution

The fourth proportional to 20,513.05, 30,738.79 and 15,826.02 is: 23,715.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.05 : 30,738.79 = 15,826.02 : x
  2. Step 2: Convert to fraction form
    20,513.05/30,738.79 = 15,826.02/x
  3. Step 3: Cross multiply
    20,513.05x = 30,738.79 × 15,826.02
  4. Step 4: Simplify right side
    20,513.05x = 486,472,609.83
  5. Step 5: Solve for x
    x = 486,472,609.83/20,513.05
  6. Step 6: Final answer
    x = 23,715.28

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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.