Home / 12,115.63-18,166.29-4,619.80

Finding the Fourth Proportional to 12,115.63, 18,166.29 and 4,619.80

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Solution

The fourth proportional to 12,115.63, 18,166.29 and 4,619.80 is: 6,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.63 : 18,166.29 = 4,619.80 : x
  2. Step 2: Convert to fraction form
    12,115.63/18,166.29 = 4,619.80/x
  3. Step 3: Cross multiply
    12,115.63x = 18,166.29 × 4,619.80
  4. Step 4: Simplify right side
    12,115.63x = 83,924,626.54
  5. Step 5: Solve for x
    x = 83,924,626.54/12,115.63
  6. Step 6: Final answer
    x = 6,926.97

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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.