Home / 10,142.54-15,213.84-3,122.50

Finding the Fourth Proportional to 10,142.54, 15,213.84 and 3,122.50

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Solution

The fourth proportional to 10,142.54, 15,213.84 and 3,122.50 is: 4,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.54 : 15,213.84 = 3,122.50 : x
  2. Step 2: Convert to fraction form
    10,142.54/15,213.84 = 3,122.50/x
  3. Step 3: Cross multiply
    10,142.54x = 15,213.84 × 3,122.50
  4. Step 4: Simplify right side
    10,142.54x = 47,505,215.40
  5. Step 5: Solve for x
    x = 47,505,215.40/10,142.54
  6. Step 6: Final answer
    x = 4,683.76

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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.