Home / 12,110.50-18,165.75-3,902.50

Finding the Fourth Proportional to 12,110.50, 18,165.75 and 3,902.50

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Solution

The fourth proportional to 12,110.50, 18,165.75 and 3,902.50 is: 5,853.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.50 : 18,165.75 = 3,902.50 : x
  2. Step 2: Convert to fraction form
    12,110.50/18,165.75 = 3,902.50/x
  3. Step 3: Cross multiply
    12,110.50x = 18,165.75 × 3,902.50
  4. Step 4: Simplify right side
    12,110.50x = 70,891,839.38
  5. Step 5: Solve for x
    x = 70,891,839.38/12,110.50
  6. Step 6: Final answer
    x = 5,853.75

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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.