Home / 11,334.66-15,656.70-7,791.72

Finding the Fourth Proportional to 11,334.66, 15,656.70 and 7,791.72

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Solution

The fourth proportional to 11,334.66, 15,656.70 and 7,791.72 is: 10,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,334.66 : 15,656.70 = 7,791.72 : x
  2. Step 2: Convert to fraction form
    11,334.66/15,656.70 = 7,791.72/x
  3. Step 3: Cross multiply
    11,334.66x = 15,656.70 × 7,791.72
  4. Step 4: Simplify right side
    11,334.66x = 121,992,622.52
  5. Step 5: Solve for x
    x = 121,992,622.52/11,334.66
  6. Step 6: Final answer
    x = 10,762.80

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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.