Home / 11,675.62-16,111.70-6,639.14

Finding the Fourth Proportional to 11,675.62, 16,111.70 and 6,639.14

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Solution

The fourth proportional to 11,675.62, 16,111.70 and 6,639.14 is: 9,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.62 : 16,111.70 = 6,639.14 : x
  2. Step 2: Convert to fraction form
    11,675.62/16,111.70 = 6,639.14/x
  3. Step 3: Cross multiply
    11,675.62x = 16,111.70 × 6,639.14
  4. Step 4: Simplify right side
    11,675.62x = 106,967,831.94
  5. Step 5: Solve for x
    x = 106,967,831.94/11,675.62
  6. Step 6: Final answer
    x = 9,161.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.