Home / 12,151.70-18,231.60-10,845.20

Finding the Fourth Proportional to 12,151.70, 18,231.60 and 10,845.20

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Solution

The fourth proportional to 12,151.70, 18,231.60 and 10,845.20 is: 16,271.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.70 : 18,231.60 = 10,845.20 : x
  2. Step 2: Convert to fraction form
    12,151.70/18,231.60 = 10,845.20/x
  3. Step 3: Cross multiply
    12,151.70x = 18,231.60 × 10,845.20
  4. Step 4: Simplify right side
    12,151.70x = 197,725,348.32
  5. Step 5: Solve for x
    x = 197,725,348.32/12,151.70
  6. Step 6: Final answer
    x = 16,271.41

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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.