Home / 21,073.76-31,610.65-11,709.31

Finding the Fourth Proportional to 21,073.76, 31,610.65 and 11,709.31

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Solution

The fourth proportional to 21,073.76, 31,610.65 and 11,709.31 is: 17,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.76 : 31,610.65 = 11,709.31 : x
  2. Step 2: Convert to fraction form
    21,073.76/31,610.65 = 11,709.31/x
  3. Step 3: Cross multiply
    21,073.76x = 31,610.65 × 11,709.31
  4. Step 4: Simplify right side
    21,073.76x = 370,138,791.85
  5. Step 5: Solve for x
    x = 370,138,791.85/21,073.76
  6. Step 6: Final answer
    x = 17,563.96

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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.