Home / 11,391.82-15,720.76-6,356.26

Finding the Fourth Proportional to 11,391.82, 15,720.76 and 6,356.26

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Solution

The fourth proportional to 11,391.82, 15,720.76 and 6,356.26 is: 8,771.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.82 : 15,720.76 = 6,356.26 : x
  2. Step 2: Convert to fraction form
    11,391.82/15,720.76 = 6,356.26/x
  3. Step 3: Cross multiply
    11,391.82x = 15,720.76 × 6,356.26
  4. Step 4: Simplify right side
    11,391.82x = 99,925,159.25
  5. Step 5: Solve for x
    x = 99,925,159.25/11,391.82
  6. Step 6: Final answer
    x = 8,771.66

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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.