Home / 12,081.70-18,125.15-3,647.50

Finding the Fourth Proportional to 12,081.70, 18,125.15 and 3,647.50

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Solution

The fourth proportional to 12,081.70, 18,125.15 and 3,647.50 is: 5,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.70 : 18,125.15 = 3,647.50 : x
  2. Step 2: Convert to fraction form
    12,081.70/18,125.15 = 3,647.50/x
  3. Step 3: Cross multiply
    12,081.70x = 18,125.15 × 3,647.50
  4. Step 4: Simplify right side
    12,081.70x = 66,111,516.81
  5. Step 5: Solve for x
    x = 66,111,516.81/12,081.70
  6. Step 6: Final answer
    x = 5,472.04

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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.