Home / 21,090.11-31,650.82-9,996.82

Finding the Fourth Proportional to 21,090.11, 31,650.82 and 9,996.82

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Solution

The fourth proportional to 21,090.11, 31,650.82 and 9,996.82 is: 15,002.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.11 : 31,650.82 = 9,996.82 : x
  2. Step 2: Convert to fraction form
    21,090.11/31,650.82 = 9,996.82/x
  3. Step 3: Cross multiply
    21,090.11x = 31,650.82 × 9,996.82
  4. Step 4: Simplify right side
    21,090.11x = 316,407,550.39
  5. Step 5: Solve for x
    x = 316,407,550.39/21,090.11
  6. Step 6: Final answer
    x = 15,002.65

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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.