Home / 20,749.71-31,120.38-7,597.59

Finding the Fourth Proportional to 20,749.71, 31,120.38 and 7,597.59

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Solution

The fourth proportional to 20,749.71, 31,120.38 and 7,597.59 is: 11,394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.71 : 31,120.38 = 7,597.59 : x
  2. Step 2: Convert to fraction form
    20,749.71/31,120.38 = 7,597.59/x
  3. Step 3: Cross multiply
    20,749.71x = 31,120.38 × 7,597.59
  4. Step 4: Simplify right side
    20,749.71x = 236,439,887.88
  5. Step 5: Solve for x
    x = 236,439,887.88/20,749.71
  6. Step 6: Final answer
    x = 11,394.85

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1.5x scale

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.