Home / 10,013.22-15,019.29-3,438.72

Finding the Fourth Proportional to 10,013.22, 15,019.29 and 3,438.72

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Solution

The fourth proportional to 10,013.22, 15,019.29 and 3,438.72 is: 5,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,013.22 : 15,019.29 = 3,438.72 : x
  2. Step 2: Convert to fraction form
    10,013.22/15,019.29 = 3,438.72/x
  3. Step 3: Cross multiply
    10,013.22x = 15,019.29 × 3,438.72
  4. Step 4: Simplify right side
    10,013.22x = 51,647,132.91
  5. Step 5: Solve for x
    x = 51,647,132.91/10,013.22
  6. Step 6: Final answer
    x = 5,157.89

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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.