Home / 10,147.30-15,222.39-3,127.89

Finding the Fourth Proportional to 10,147.30, 15,222.39 and 3,127.89

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Solution

The fourth proportional to 10,147.30, 15,222.39 and 3,127.89 is: 4,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.30 : 15,222.39 = 3,127.89 : x
  2. Step 2: Convert to fraction form
    10,147.30/15,222.39 = 3,127.89/x
  3. Step 3: Cross multiply
    10,147.30x = 15,222.39 × 3,127.89
  4. Step 4: Simplify right side
    10,147.30x = 47,613,961.46
  5. Step 5: Solve for x
    x = 47,613,961.46/10,147.30
  6. Step 6: Final answer
    x = 4,692.28

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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.