Home / 10,192.78-15,288.39-3,172.60

Finding the Fourth Proportional to 10,192.78, 15,288.39 and 3,172.60

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Solution

The fourth proportional to 10,192.78, 15,288.39 and 3,172.60 is: 4,758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,192.78 : 15,288.39 = 3,172.60 : x
  2. Step 2: Convert to fraction form
    10,192.78/15,288.39 = 3,172.60/x
  3. Step 3: Cross multiply
    10,192.78x = 15,288.39 × 3,172.60
  4. Step 4: Simplify right side
    10,192.78x = 48,503,946.11
  5. Step 5: Solve for x
    x = 48,503,946.11/10,192.78
  6. Step 6: Final answer
    x = 4,758.66

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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.