Home / 10,138.88-15,210.75-3,213.38

Finding the Fourth Proportional to 10,138.88, 15,210.75 and 3,213.38

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Solution

The fourth proportional to 10,138.88, 15,210.75 and 3,213.38 is: 4,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.88 : 15,210.75 = 3,213.38 : x
  2. Step 2: Convert to fraction form
    10,138.88/15,210.75 = 3,213.38/x
  3. Step 3: Cross multiply
    10,138.88x = 15,210.75 × 3,213.38
  4. Step 4: Simplify right side
    10,138.88x = 48,877,843.78
  5. Step 5: Solve for x
    x = 48,877,843.78/10,138.88
  6. Step 6: Final answer
    x = 4,820.84

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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.