Home / 12,516.81-18,778.97-7,250.60

Finding the Fourth Proportional to 12,516.81, 18,778.97 and 7,250.60

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Solution

The fourth proportional to 12,516.81, 18,778.97 and 7,250.60 is: 10,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.81 : 18,778.97 = 7,250.60 : x
  2. Step 2: Convert to fraction form
    12,516.81/18,778.97 = 7,250.60/x
  3. Step 3: Cross multiply
    12,516.81x = 18,778.97 × 7,250.60
  4. Step 4: Simplify right side
    12,516.81x = 136,158,799.88
  5. Step 5: Solve for x
    x = 136,158,799.88/12,516.81
  6. Step 6: Final answer
    x = 10,878.08

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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.