Home / 10,000.45-15,003.24-3,425.68

Finding the Fourth Proportional to 10,000.45, 15,003.24 and 3,425.68

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Solution

The fourth proportional to 10,000.45, 15,003.24 and 3,425.68 is: 5,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,000.45 : 15,003.24 = 3,425.68 : x
  2. Step 2: Convert to fraction form
    10,000.45/15,003.24 = 3,425.68/x
  3. Step 3: Cross multiply
    10,000.45x = 15,003.24 × 3,425.68
  4. Step 4: Simplify right side
    10,000.45x = 51,396,299.20
  5. Step 5: Solve for x
    x = 51,396,299.20/10,000.45
  6. Step 6: Final answer
    x = 5,139.40

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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.