Home / 12,180.36-18,271.59-3,415.38

Finding the Fourth Proportional to 12,180.36, 18,271.59 and 3,415.38

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Solution

The fourth proportional to 12,180.36, 18,271.59 and 3,415.38 is: 5,123.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.36 : 18,271.59 = 3,415.38 : x
  2. Step 2: Convert to fraction form
    12,180.36/18,271.59 = 3,415.38/x
  3. Step 3: Cross multiply
    12,180.36x = 18,271.59 × 3,415.38
  4. Step 4: Simplify right side
    12,180.36x = 62,404,423.05
  5. Step 5: Solve for x
    x = 62,404,423.05/12,180.36
  6. Step 6: Final answer
    x = 5,123.36

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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.