Home / 11,920.48-16,444.56-7,137.16

Finding the Fourth Proportional to 11,920.48, 16,444.56 and 7,137.16

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Solution

The fourth proportional to 11,920.48, 16,444.56 and 7,137.16 is: 9,845.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.48 : 16,444.56 = 7,137.16 : x
  2. Step 2: Convert to fraction form
    11,920.48/16,444.56 = 7,137.16/x
  3. Step 3: Cross multiply
    11,920.48x = 16,444.56 × 7,137.16
  4. Step 4: Simplify right side
    11,920.48x = 117,367,455.85
  5. Step 5: Solve for x
    x = 117,367,455.85/11,920.48
  6. Step 6: Final answer
    x = 9,845.87

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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.