Home / 12,239.54-18,358.67-7,176.55

Finding the Fourth Proportional to 12,239.54, 18,358.67 and 7,176.55

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Solution

The fourth proportional to 12,239.54, 18,358.67 and 7,176.55 is: 10,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.54 : 18,358.67 = 7,176.55 : x
  2. Step 2: Convert to fraction form
    12,239.54/18,358.67 = 7,176.55/x
  3. Step 3: Cross multiply
    12,239.54x = 18,358.67 × 7,176.55
  4. Step 4: Simplify right side
    12,239.54x = 131,751,885.23
  5. Step 5: Solve for x
    x = 131,751,885.23/12,239.54
  6. Step 6: Final answer
    x = 10,764.45

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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.