Home / 12,161.86-18,235.14-5,138.26

Finding the Fourth Proportional to 12,161.86, 18,235.14 and 5,138.26

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Solution

The fourth proportional to 12,161.86, 18,235.14 and 5,138.26 is: 7,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.86 : 18,235.14 = 5,138.26 : x
  2. Step 2: Convert to fraction form
    12,161.86/18,235.14 = 5,138.26/x
  3. Step 3: Cross multiply
    12,161.86x = 18,235.14 × 5,138.26
  4. Step 4: Simplify right side
    12,161.86x = 93,696,890.46
  5. Step 5: Solve for x
    x = 93,696,890.46/12,161.86
  6. Step 6: Final answer
    x = 7,704.16

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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.