Home / 11,920.52-16,450.43-6,615.68

Finding the Fourth Proportional to 11,920.52, 16,450.43 and 6,615.68

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Solution

The fourth proportional to 11,920.52, 16,450.43 and 6,615.68 is: 9,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.52 : 16,450.43 = 6,615.68 : x
  2. Step 2: Convert to fraction form
    11,920.52/16,450.43 = 6,615.68/x
  3. Step 3: Cross multiply
    11,920.52x = 16,450.43 × 6,615.68
  4. Step 4: Simplify right side
    11,920.52x = 108,830,665.41
  5. Step 5: Solve for x
    x = 108,830,665.41/11,920.52
  6. Step 6: Final answer
    x = 9,129.69

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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.