Home / 12,072.90-18,117.45-5,495.70

Finding the Fourth Proportional to 12,072.90, 18,117.45 and 5,495.70

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Solution

The fourth proportional to 12,072.90, 18,117.45 and 5,495.70 is: 8,247.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.90 : 18,117.45 = 5,495.70 : x
  2. Step 2: Convert to fraction form
    12,072.90/18,117.45 = 5,495.70/x
  3. Step 3: Cross multiply
    12,072.90x = 18,117.45 × 5,495.70
  4. Step 4: Simplify right side
    12,072.90x = 99,568,069.97
  5. Step 5: Solve for x
    x = 99,568,069.97/12,072.90
  6. Step 6: Final answer
    x = 8,247.24

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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.