Home / 10,142.35-15,214.97-3,122.94

Finding the Fourth Proportional to 10,142.35, 15,214.97 and 3,122.94

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Solution

The fourth proportional to 10,142.35, 15,214.97 and 3,122.94 is: 4,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.35 : 15,214.97 = 3,122.94 : x
  2. Step 2: Convert to fraction form
    10,142.35/15,214.97 = 3,122.94/x
  3. Step 3: Cross multiply
    10,142.35x = 15,214.97 × 3,122.94
  4. Step 4: Simplify right side
    10,142.35x = 47,515,417.69
  5. Step 5: Solve for x
    x = 47,515,417.69/10,142.35
  6. Step 6: Final answer
    x = 4,684.85

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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.