Home / 20,826.35-31,200.29-10,284.03

Finding the Fourth Proportional to 20,826.35, 31,200.29 and 10,284.03

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Solution

The fourth proportional to 20,826.35, 31,200.29 and 10,284.03 is: 15,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.35 : 31,200.29 = 10,284.03 : x
  2. Step 2: Convert to fraction form
    20,826.35/31,200.29 = 10,284.03/x
  3. Step 3: Cross multiply
    20,826.35x = 31,200.29 × 10,284.03
  4. Step 4: Simplify right side
    20,826.35x = 320,864,573.89
  5. Step 5: Solve for x
    x = 320,864,573.89/20,826.35
  6. Step 6: Final answer
    x = 15,406.67

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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.