Home / 31,771.28-47,656.37-7,755.81

Finding the Fourth Proportional to 31,771.28, 47,656.37 and 7,755.81

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Solution

The fourth proportional to 31,771.28, 47,656.37 and 7,755.81 is: 11,633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,771.28 : 47,656.37 = 7,755.81 : x
  2. Step 2: Convert to fraction form
    31,771.28/47,656.37 = 7,755.81/x
  3. Step 3: Cross multiply
    31,771.28x = 47,656.37 × 7,755.81
  4. Step 4: Simplify right side
    31,771.28x = 369,613,712.23
  5. Step 5: Solve for x
    x = 369,613,712.23/31,771.28
  6. Step 6: Final answer
    x = 11,633.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.